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The Scoop on Poop – When Stool Color Signals a Potential Liver Health Problem


Nicole Cutler

Dec 5th, 2012

Some people may think that checking on poop color is gross, but others recognize the notice it can give about liver health.

toilet paper

Many civilized folk tend to avoid potty talk, regarding bodily functions as inappropriate topics for discussion. Regrettably, our discomfort in discussing bowel movements leads to a lack of knowledge on the subject, rendering many individuals unsure of what their stool’s appearance implies. People who are brave enough to peek in the bowl after elimination could learn a lot from what they are leaving behind – including several possible indicators of subpar liver health.

According to Yale gastroenterologist Anish Sheth, MD, the author of What’s Your Poo Telling You?, “what comes out tells you a lot about what’s going on inside.” Although there are several different factors determining what stool looks like, color is one of the most important indicators of an imbalance somewhere in the body. Ideally, a healthy bowel movement should be a medium brown color; however, a different hue or color does not necessarily indicate a problem.

Since feces’ color will naturally change with a varied diet, there is no need to panic when the color appears to be different. Instead, awareness of stool hue can help people recognize when a new color occurs frequently.

As an organ with so many responsibilities ranging from chemical production, digestive assistant, cholesterol manufacturing and detoxification, the liver can shed hints of its wellness in a bowel movement. When lasting for more than several evacuations, the following colors can be a sign of a potential liver imbalance:

•    Red – Bright red or dark red in the stool can indicate bleeding somewhere in the gastrointestinal tract. Although eating beets or food with red food coloring can make bowel movements reddish, persistent red stool can signal stomach ulcers, hemorrhoids or bleeding esophageal varices. Esophageal varices are a complication of advanced liver disease, where a blockage of the liver increases pressure in the portal vein, causing blood vessels in the esophagus or stomach to rupture and bleed. Bleeding esophageal varices is a medical emergency and is usually accompanied by other symptoms such as vomiting of blood, low blood pressure and rapid heart rate.

•    Black – Similar to red in the stool, a persistent black color in stool can indicate internal bleeding from esophageal varices. Stool that is black due to bleeding is also usually sticky or tarry. However, black stool can also be a result of taking a supplement with iron or a medication containing bismuth subsalicylate – like Pepto Bismol.

•    Grey, Pale, Yellow or Clay-Colored – The liver releases bile into the stool, giving it a normal brown color. If there is inflammation or scarring in the liver that inhibits bile production, or if the flow out of the liver is blocked, bowel movements may appear to be grey, pale, yellow or clay-colored. On the other hand, using antacids that contain aluminum hydroxide or having a barium enema test can also turn feces a pale color.

•    Greasy – While not necessarily a color, a greasy bowel movement will float and usually means there’s increased fat in the stools. Called steatorrhea, these stools can result from eating a high fat meal. However, if stools appear to be floating and greasy regularly, there may be an underlying disorder. Lipase, a digestive enzyme produced by the pancreas, and bile salts from the liver are needed to break down and absorb fat. Any condition that results in decreased lipase or bile salts can cause steatorrhea – including inflammation, scarring or a blockage in the liver.

Every bowel movement color listed above can be a passing, temporary, inconsequential occurrence. Regardless, if an abnormal palette persists for more than a day or two, keep a record of your stool’s hue and take it to your doctor. Although few consider bowel movement color to be a red flag of liver disease in and of itself, being aware of a persistent color change can be one of the first indications that your liver health should be evaluated by your physician., Healthy and Unhealthy Stool, Cathy Wong, Retrieved November 18, 2012,, 2012., The Scoop on Poop, Retrieved November 18, 2012, WebMD, Inc., 2012., White Stool: Should I Be Concerned?, Michael F. Picco, MD, Retrieved November 18, 2012, Mayo Foundation for Medical Education and Research, 2012., Digestive Problems and Bleeding Varices, Retrieved November 18, 2012, MedicineNet, Inc, 2012., Stools – Pale or clay-colored, Retrieved November 18, 2012, A.D.A.M., Inc., 2012., Before Your Flush, Retrieved November 17, 2012, Rodale Inc., 2012.

  • OldTooly

    OK what about green poop? And not having eaten anything green nor any green vegetables? I have read some about excess bile making stool green and digestive track moving too quickly to allow for the bile to work, and eventually be a brown color. Any thoughts?

  • jackie

    my poo is always green, but that’s because i eat lots of green stuff everyday, like chlorella, wheatgrass, barley grass, spirulina, and green super food powders. i should probably stop for a while to see what color it really is.

  • Grant McNally

    I get Stools that float and are streaked with mucus, not all the time-around half- but, I don’t eat High Fat stuff – never fry food, keep dairy to minimum -I find eating difficult full – when I do I watch what I eat and see what difference that makes (as I had heard that floating poo could indicate fatty Liver), but, doesn’t deem to make any difference. my GP is brainless (didn’t know what HCC meant!!!) so I don’t see her being very helpful!!

  • Redkodiak

    I have been diagnosed with NASH, have metabolic syndrome, my liver side feels enlarged and my waste is now a steady mustard yellow.. ok gross I know, but I am concerned that the NASH may be escallating – my ex-GI doc told me would kill me in 10 years, that was 2-3 yrs ago, I got a lap band to help lose weight, yup after one year I am at almost the same weight.. any suggestions? should I get another liver biopsy?

  • Astral Writer

    Heard that green stool may indicate you eat plenty of green vegetables. However, green stool and pain coming from the liver may identify a potential liver condition.