Why does my poop smell like cat poop

Original post found on Cat World.  Cat World is a community of crazy cat enthusiasts who all share a passion for staying up to date with what's happening in the kitty circles as well as staying on top of new tricks, tips, advice, and more.

PLEASE NOTE: This blog is sharing of information only, and not meant as veterinary/medical advice. If your cat(s) experience issues, please consult with your local vet office.

The exact cause of why your cat's poop can smell so bad can vary greatly. It's important to have the foul smelling stool checked by a veterinarian if the odor of your cat's feces is really bad. You can find that the stink is really from something they ate, or it can be a more serious matter. Your cats foul smelling stools should be taken seriously if the feces' odor is ongoing.

Naturally, stool has an unpleasant smell. But, sometimes it can have a strong foul smell. Just like human stool, cat’s poop can smell horrible for the same reasons. But sometimes it makes you ask "why does my cat's poop smell so bad?" and we have answers.

Serious medical conditions, bacteria not good for feline's health present in the colon and food consumed are some reasons your kitty’s poop can smell so bad. Moreover, excess gas and diarrhea also tend to cause it to stink.

Many kitty disorders often result in stool with a stinking smell and diarrhea. However, most of the conditions either self-remedy or disappear with a change in diet.

 According to Cornell University’s College of Veterinary Medicine’s Tom Ewing, diarrhea in your cat could point to an underlying, life-threatening condition.

So, What Causes A Foul Smell In Cats' Poop?

Introducing new foods to your kitty’s diet or parasite-related inflammation can cause your cat’s stool to stink in the litter box. Gastrointestinal tract, infectious diseases, inflammation and cancer are often attributed to adult kitty fecal abnormality. A vet can help determine the actual cause of foul smell in your pet’s droppings for prompt treatment.

Cats dislike water, but are generally clean animals. They work hard to smell good and stay clean even if they rarely get baths. On the converse, litter boxes start smelling as soon as their poop drops in them, unless of course you have an automatic litter box, which cleans itself. However, a sudden change in the smell of feces is a cause for concern, especially if it has an abnormal, strong pungent smell.

What’s good about all these is that you can feed your cat with cats food for smelly fecal matter to get rid of the bad smell. Here’re a few reasons why your cat’s feces could be smelling foul:

Top 7 Reasons Feline Feces Stinks

Cat poop can suddenly start smelling foul just like human defecation. It indicates that something isn’t right with your best friend. And it can be anything from bacteria and diet to parasites and a critical health condition.

1) Diet

Just like humans, cats are sensitive to certain foods or specific things found in particular foods. For instance, your kitty could be sensitive to grains or foods with high vitamin content.

Diet elimination can help you determine the specific foods causing your cat digestive issues and thus "go to the bathroom" with a foul smell. Cut out vitamin supplements or give a grain-free diet to get rid of these issues.

2) Bacteria

Cats are naturally carnivores. They prey on other small animals to eat as food. Their natural drive for prey can result in them eating what’s not right or healthy. This is more so true if your cat spends a lot of time outdoors.

They can eat meat infected with salmonella or E. coli bacteria, causing them digestive discomfort, inflammation or sudden stinking smell in feces as well as diarrhea.

3) Medications And Hormonal Changes

Certain medications for pain and those with an effect on hormones can alter your cat’s natural chemical balance. Depending on the duration the chemical changes have occurred, your cat can suddenly defecate foul-smelling poop.

4) Digestive Disorders

Digestive disorders and related problems can wreak havoc in your cat’s gastrointestinal tract as it does in humans. The result would be strong pungent odors, usually very smelly. Most issues with the digestive tract often result from poor digestion and absorption of starches and fats.

5) Anal Glands Infections

Every mammal, including cats, have anal glands. They often drain through gland ducts. However, sometimes they clog and call for manual draining. If the glands get infected, your cat can produce a runny discharge that smells so bad and lingers all over the litter box.

6) Protein-Rich Foods

Cats are carnivores naturally. That means their food is often rich in proteins, specifically animal proteins they source outdoors. As a result, the high protein content in your cat’s diet causes it to defecate stool that smells horrible and smelly. Although you can’t do much about the smell in your cat’s droppings, a change in diet can do wonders.

7) Parasites

A parasitic infection can upset the stomach of your cat, causing serious diarrhea and feces that smell so bad that you'll have to go to a veterinarian. Coccidian and Trichomonas are some parasites that often cause serious issues in animals, including cats that are smelly. However, antibiotics and other veterinarian interventions can treat conditions the parasites cause in your cat or cats.

How To Remedy Your Kitty's Foul-Smelling Stool

Nobody likes the smell of cats’ feces. It gets even worse when the already bad smell becomes difficult to withstand from cats. But, since an infection, an inflammatory disease, gastrointestinal tract and cancer can cause discomfort and stinking feces in your best friend, it becomes necessary to treat all underlying conditions. Here’s how to deal with the issues:

1) Disinfect The Litter Box And Keep It Clean

Scoop poop from the cats litter box on a daily basis; you can create a schedule for that. Sprinkle baking soda on the litter box floor to eliminate bad odor and kill germs and other forms of bacteria. Change the cats litter as often as possible to keep it fresh and clean, especially if you have CatSpot coconut cat litter.

Scrub the litter box at least twice every month, from top to bottom, especially for plastic litter boxes; they easily harbor bacteria and produce a foul smell. Many owners have also considered a special litter that changes colors depending on your cat's health.

2) Changing The Diet

Upon determining the foods your cat is sensitive to, put them on a new diet and feeding routine for your cats health, according to any veterinarian you ask. Make sure you consult a veterinarian to help come up with a proper diet and feeding routine for your cats. Digestive supplements can reduce the number of bacteria present in the body of your cat, with is necessary for your pet health.

Choose cat food brands that use a few ingredients to produce their cat foods. Check online articles, journals or literature resources on the best foods for cat with foul-smelling stool. Use the phrase “the best cat food for foul-smelling or stinking fecal matter.”

3) Cat Grooming

Groom your cat to remove any foul smell on its body. Wash it with cat shampoo and comb the hairs to remove loose ones.

4) Vacuum Your House

Vacuum your draperies, area rugs, carpets, couches and chairs as often as possible, including other areas your cat frequents. It’ll help eliminate dander and loose hairs from your cats body, leaving it smelling fresh and not smelly.

Consider using furnace filters, air purifiers, blankets and beds for cats to keep foul smell of your cat’s feces out of your house.

Jackie Johnston

Author

Jackie Johnston is the founder of Cat Word – a community of cat enthusiasts with a mission to spread as much knowledge as they can throughout the world on every aspect of raising and nurturing cats! In her spare time, Jackie loves reading and spending time with her two sons Logan and Christopher, and of course with their furry felines Simba and Max.

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 2

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 3

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 4

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 5

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 6

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 7

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 8

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 9

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 10

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 11

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 12

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 13

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 14

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 15

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 16

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 17

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 18

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 19

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 20

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 21

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 22

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 23

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 24

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 25

Was this helpful?

The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.


Page 26

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The foods you eat can cause changes in stool odor. Even foul-smelling stools can be due to changes in your diet. However, atypically foul-smelling stools may be a symptom of a health condition. Examples include celiac disease, Crohn’s disease, cystic fibrosis, and intestinal infections. Because of the range of possible causes of foul stool odor, a correct diagnosis of the underlying health condition is important.

Stools form in the large intestine, or the colon, which is part of the digestive system. Usually, “good bacteria” live in your large intestine and help digest or break down the food remnants that enter the large intestine from the small intestine. Stools form during this process.

Stools then pass through the large intestine to the rectum for elimination from the body. The usual unpleasant smell associated with stools results from the bacteria.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition, such as an intestinal infection, abscess, or obstruction. Get immediate medical care by calling 911 if you have foul-smelling stools with serious symptoms, such as severe abdominal pain, cramping, and bloody stools.

Why does my poop smell like cat poop

Audrey Shtecinjo/Stocksy United

Foul-smelling stools can be the result of dietary changes, such as consuming foods with high sulfur content. Information about sulfur content in foods is limited, but some foods that contain sulfur include:

  • proteins, including eggs
  • dairy products
  • garlic
  • onions
  • beans
  • some cruciferous vegetables, including:
    • Brussels sprouts
    • cauliflower
    • cabbage
    • kale
    • broccoli
    • horseradish
    • radish
    • turnips

However, many conditions can lead to foul-smelling stools. Foul-smelling stools can be a symptom of inflammatory disorders, intestinal infections, malabsorption disorders, and inherited medical conditions.

Foul-smelling stools may arise from intestinal infections due to viruses, bacteria, and parasites, including:

Inflammatory causes of foul-smelling stools include:

  • chronic pancreatitis
  • Crohn’s disease
  • ulcerative colitis
  • microscopic colitis

Foul-smelling stools may arise from malabsorption disorders, when your body does not absorb nutrients from food efficiently.

One malabsorption disorder includes celiac disease, which is a severe sensitivity to gluten from wheat and other grains. The condition can cause intestinal damage. Another malabsorption disorder is short bowel syndrome, when your body does not absorb nutrients due to intestinal disease or surgery.

Foul-smelling stool is one possible symptom of cystic fibrosis, which is an inherited condition that causes thick mucus buildup in the lungs and digestive tract.

In some cases, foul-smelling stools may be a symptom of a serious or life threatening condition that needs immediate evaluation in an emergency setting. These include an abdominal abscess and intestinal obstruction.

Foul-smelling, greasy stools in infants can be common, but if you notice it is persistent, new, or concerns you in any way, get medical help. It could be a symptom of:

  • lactose intolerance
  • cystic fibrosis
  • cerebral palsy
  • pancreatic insufficiency

Foul-smelling stools may accompany other symptoms, which vary depending on the underlying health condition. Symptoms frequently affect the digestive tract, but they may also involve other body systems.

Stool odor may accompany other symptoms affecting the digestive system, including:

Stool odor may accompany symptoms related to other body systems. Symptoms may include:

  • fatigue
  • fever
  • joint pain or generalized body aches
  • unexplained weight loss

In some cases, foul-smelling stools may occur with other symptoms that might indicate a serious or life threatening condition. Cases such as those need immediate evaluation in an emergency setting. Get immediate medical care by calling 911 if you, or someone you are with, have a foul stool odor and any of the following symptoms:

To diagnose the underlying cause of foul-smelling stool, your doctor or licensed healthcare professional may ask you several questions related to your symptoms. You can best help your healthcare professional diagnose the underlying cause of your stool odor by providing complete answers to these questions:

  • When did your stool odor start?
  • What color are your stools? Are they lighter or darker than usual?
  • Do you have difficulty pushing or moving your stools?
  • What is your current diet? Have you made any recent changes in your diet?
  • Do you notice a change in your stool odor with any particular foods or drinks?
  • What are your other symptoms?

Your healthcare professional may request a stool sample to help in diagnosing the underlying cause of your stool odor.

Complications of foul-smelling stool depend on the underlying condition. Identifying and treating the underlying cause of stool odor is important to minimize potential complications.

Because frequent foul-smelling stool can be due to serious conditions, lacking treatment can result in serious complications.

Once a healthcare professional diagnoses the underlying cause, it is important for you to follow the treatment plan you and your healthcare professional design specifically for you to reduce the risk of potential complications, including:

If foul-smelling stools are due to an underlying condition, such as Crohn’s disease, it may not be possible to prevent the condition itself.

To prevent the spread of infections that can cause foul-smelling stools, maintain hygiene habits and maintain physical distance from people you know who have an infection already.

However, there may be ways to prevent foul-smelling stools that are due to dietary changes. The Crohn’s & Colitis Foundation recommends trying the following tips to minimize digestive symptoms:

  • eating 4–6 small meals per day instead of larger portions
  • avoiding dairy products, such as milk and soft cheeses
  • reducing your intake of ultra-processed foods and unhealthy fats
  • limiting your intake of foods with insoluble fiber, such as cruciferous vegetables
  • consuming fewer sugar alcohols, such as sorbitol
  • lowering caffeine and alcohol intake

Foul-smelling stools are usually the result of dietary changes. An example of this could be consuming foods that are high in sulfur, such as eggs.

However, many conditions and infections can cause foul-smelling stools, too. These include Salmonella and E. coli infections, and conditions such as Crohn’s disease, lactose intolerance, and celiac disease.

Was this helpful?

Last Review Date: 2022 Jun 29

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Never ignore professional medical advice in seeking treatment because of something you have read on the site. If you think you may have a medical emergency, immediately call your doctor or dial 911.