
The appearance of your poop can reveal a lot about your health and diet. For example, floating poop can be caused by new foods, excess gas, or a high-fibre diet. Bristol type 1 or 2 indicates constipation, which can be caused by an inactive lifestyle, a diet lacking in nutrition, or dehydration. Green poop may signal that your food isn't spending enough time in your digestive system or that you're eating lots of leafy greens. Red poop can be caused by dietary factors such as beets and cranberries, but it can also indicate bleeding. Yellow poop may mean you're eating too much fat or have an intestinal parasite. Oily, greasy, and difficult-to-flush poop could mean your body isn't properly digesting fat. These are just a few examples of how your poop can provide insights into your diet and overall health.
| Characteristics | Values |
|---|---|
| Color | Dark brown to light brown is the ideal color range. Black stool can be caused by iron supplements, bismuth medication, or bleeding in the upper gastrointestinal tract. Green stool can indicate that food is passing through the digestive system too quickly or that you are eating lots of leafy greens. Yellow or light-colored stool can be a sign of infection or inflammation in the gallbladder, liver, or pancreas. Red stool can be caused by dietary factors such as beets, cranberries, red gelatin, or tomato juice, or it can indicate bleeding in the lower intestine, often due to hemorrhoids. White spots or mucus can indicate medication use or problems absorbing food. |
| Shape and Consistency | The ideal shape is like a sausage or a snake, indicating a healthy gut microbiome and digestive system. Hard, separate pellets indicate severe constipation, often due to a lack of fluid and fiber in the diet. Soft, blob-shaped stool is slightly loose and usually follows major meals. |
| Smell | A foul smell may indicate the presence of unwanted bacteria in the gut, which can interfere with digestion. |
| Floating or Sinking | Floating stool is less dense than the surrounding water and can be caused by new foods, excess gas, or malabsorption. It usually resolves within a few days but can sometimes indicate an infection, food intolerance, digestive disorder, or other medical condition. |
| Frequency | A healthy frequency ranges from a minimum of 3 times a week to a maximum of 3 times a day. Constipation can be caused by dietary factors, lack of exercise, blockage, or hormonal changes. |
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What You'll Learn
- Green poop can mean your food isn't spending enough time in your system or you're eating lots of greens
- Red poop can be caused by dietary reasons, but may indicate bleeding in the colon
- Floating poop can be caused by new foods, excess gas, or malabsorption
- Hard, lumpy poop can be a sign of constipation caused by diet or lack of exercise
- Yellow, greasy, and stinky poop can mean you're eating too much fat

Green poop can mean your food isn't spending enough time in your system or you're eating lots of greens
The colour of your poop can indicate the state of your diet, fluid intake, medication use, and lifestyle. The ideal colour of your poop should range from light brown to dark brown.
Green poop can be caused by a few different factors. One common cause is a diet rich in dark, leafy greens, such as spinach. This is due to the chlorophyll in these plants, which produces a green colour. If you've recently consumed large quantities of green vegetables, this could be the reason for your green poop.
Another possible explanation for green poop is that your food is not spending enough time in your digestive system. Normally, it takes about three days for food to complete its journey through the digestive tract. However, if your stool is moving too quickly, it can result in green-coloured poop. This happens because the bile pigment doesn't have sufficient time to break down. Diarrhoea, stress, or certain pathogens, such as the Salmonella bacterium or the Giardia parasite, can cause food to move through the intestines more rapidly, leading to green stool.
In addition to diet and digestion speed, green poop can also be influenced by medications and artificial colouring. Antibiotics, iron supplements, and other medications can sometimes lead to green poop. Consuming artificially coloured foods, such as bakery frosting or coloured drink mixes, can also result in green stool.
While green poop is often harmless, it is important to be mindful of other potential causes. If you haven't consumed a significant amount of green vegetables or artificial colouring, it is recommended to consult a doctor. Green poop could be indicative of an underlying health condition, bacterial or viral infections, gastrointestinal disorders, or parasites.
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Red poop can be caused by dietary reasons, but may indicate bleeding in the colon
The colour of your stool can provide clues about your diet, fluid intake, medication use, and lifestyle. Red stool can be caused by dietary reasons, but it may also indicate bleeding in the colon.
Red stool can be alarming, but it is not always a reason to worry. Sometimes, your stool is red because you have consumed red or orange foods. Beets, cranberries, red gelatin, tomato juice, blueberries, blackberries, and red food colouring can all turn stool red. The body's ability to metabolise lycopene, a pigment in tomatoes, can vary, and the pigment can remain intact until it exits the body. The plant compound betalain, which gives beets their colour, may also resist digestion and dye stool pinkish-red. If your stool is discoloured by a food's natural colour or an artificial dye, you probably won't have any other symptoms that suggest a gastrointestinal problem.
However, if you have abdominal pain, nausea, vomiting, unexplained weight loss, or anemia along with red-coloured stool, it could be a sign of something more serious, such as colon cancer. Bright red blood in the stool is likely coming from the lower gastrointestinal tract, such as the colon or rectum, and can be caused by hemorrhoids, anal fissures, or diverticular bleeding. Darker blood may be caused by problems in the esophagus, stomach, or small intestine. If you are experiencing red stool and are unsure of the cause, you should see your healthcare provider.
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Floating poop can be caused by new foods, excess gas, or malabsorption
Floating poop is usually not a cause for concern if it happens occasionally. However, it can be indicative of an underlying health condition if it occurs frequently. Floating poop can be caused by new foods, excess gas, or malabsorption.
New foods
Introducing new foods into your diet can sometimes cause floating stools. This is because certain foods can produce more gas during digestion, which gets trapped in the stool and causes it to float. For example, a diet high in fiber can lead to increased bacterial fermentation, resulting in more air that can get trapped in the stool. Beans, Brussels sprouts, broccoli, and cauliflower are examples of high-fiber foods that can cause gas. Similarly, switching from a low-fiber diet to a high-fiber diet can increase bloating, especially when the new diet is also rich in protein.
Excess gas
Excess gas in the stool can also be caused by infections or certain medical conditions. Some infections, such as giardiasis, can impair the body's ability to absorb food, leading to malabsorption and fatty stools that float. Other gastrointestinal (GI) infections, such as those caused by Escherichia coli and Salmonella, can also cause floating stools due to the gas produced by the virus or bacterium. Additionally, functional bowel disorders, such as irritable bowel syndrome, have been linked to floating stools.
Malabsorption
Malabsorption syndrome is a condition where the body is unable to absorb nutrients from food properly. This can lead to symptoms such as bloating, diarrhea, and weight loss. Malabsorption can be caused by various factors, including intestinal disorders such as Crohn's disease and celiac disease, as well as surgical removal of a portion of the small intestine. Fat malabsorption, in particular, can lead to steatorrhea, which is an increase in fat in the stool, causing it to float.
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Hard, lumpy poop can be a sign of constipation caused by diet or lack of exercise
Hard, lumpy poop that is difficult to pass can be a sign of constipation. Constipation is usually caused by diet, lack of exercise, or other lifestyle factors. It can also be caused by hormonal changes, medical conditions, or certain medications.
Constipation occurs when food moves too slowly through the digestive tract, giving the colon too much time to absorb water from the waste, resulting in dry and hard stools. A diet lacking in fibre and dehydration are major causes of constipation. Fibre-rich foods include fruits, vegetables, and grains, which help to add bulk to stools and make them easier to pass. Increasing water intake can also help to soften stools.
Lack of physical activity is another common cause of constipation. Exercise affects the blood supply to the gut, and insufficient movement can lead to slower transit time of food through the digestive tract. Additionally, changes in routine, such as travel or alterations in sleep patterns, can contribute to constipation.
Other factors that can cause constipation include consuming large amounts of dairy products, hormonal changes during pregnancy, and certain medical conditions such as irritable bowel syndrome (IBS) or diabetes.
To relieve constipation, it is recommended to increase fibre and water intake, engage in regular physical activity, and ensure adequate hydration. Over-the-counter laxatives and stool softeners can also provide relief, but it is important to consult a healthcare provider before taking any medication, especially for prolonged periods.
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Yellow, greasy, and stinky poop can mean you're eating too much fat
Yellow, greasy, and foul-smelling poop can indicate that your body is struggling to absorb fat properly, resulting in excess fat ending up in your stool. This condition is known as steatorrhea, characterised by the presence of excessive amounts of fat in the stool. It is often a symptom of fat malabsorption, where the body encounters difficulties in breaking down, digesting, and metabolising fats effectively. As a result, the unabsorbed fats are excreted through your poop.
Steatorrhea is not a disease in itself but is typically a consequence of fat malabsorption, which can affect one or several organs in your digestive system. It may be caused by conditions like celiac disease, pancreas problems, cystic fibrosis, or pancreatic cancer. Celiac disease, for instance, is an autoimmune disease where the consumption of gluten triggers an immune response, leading to inflammation and damage in the small intestine.
Yellow poop can also be indicative of other underlying issues, such as parasitic infections. Giardiasis, an infection caused by the parasite Giardia, can lead to diarrhoea, greasy and foul-smelling stools, bloating, nausea, and other unpleasant symptoms. Additionally, stress or a diet high in fat can also contribute to yellow-coloured stools.
If you consistently experience yellow, greasy, and stinky poop, it is advisable to consult a healthcare professional. They may recommend a fecal fat analysis, where they examine your stool samples over 24 to 72 hours to measure the fat content and determine the percentage of unabsorbed fat. This evaluation can help identify any underlying conditions affecting your digestive system and guide appropriate treatment.
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Frequently asked questions
Bright red-coloured poop could be due to food or bleeding. If you have consumed red foods and dyes, this could be the cause. For example, beets may turn stool reddish and should clear within a few days. If your stools do not return to normal, consult a doctor.
Poop floats when it is less dense than the surrounding water. This can be caused by new foods, excess gas, or a high-fibre diet. If the floating stools are also stinky, it could be a sign of an infection, food intolerance, or a digestive disorder.
Green poop may signal that your food is passing through your digestive system too quickly or that you are eating a lot of leafy greens like spinach. If your poop is a neon green colour, it is likely due to artificial colours from drink mixes, bakery frosting, or frozen novelties.










































