Why Is My Poop Black?
Article Sources
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Stool is normally a shade of brown. Largely influenced by the foods consumed and the amount of bile present, stool can range from light to dark brown. It may even be green under some circumstances. Usually, stool color isn't significant, but there are some instances when stool color merits medical evaluation.
Stool that's black in color may warrant a trip to the doctor because it may indicate the presence of bleeding in the upper gastrointestinal tract. On the other hand, black stool may occur as a result of eating certain foods or taking various medications or supplements.1Michael F. Picco, M.D. ‘Stool Color: When to Worry.’ Mayo Clinic, Mayo Foundation for Medical Education and Research, 10 Oct. 2020, www.mayoclinic.org/stool-color/expert-answers/faq-20058080.
