Why Is My Poop Black?
Article Sources
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4. Bleeding Ulcer and Black Poop
If the lining of the digestive tract becomes damaged, perforations known as ulcers may form, and bleeding may occur. This bleeding may cause stool to have a black, tarlike appearance.8‘Rectal Bleeding: Causes, Colors, Tests & When To Call The Doctor.’ Cleveland Clinic, my.clevelandclinic.org/health/symptoms/14612-rectal-bleeding.
Often caused by the bacterium Helicobacter pylori (H. pylori) or excessive use of nonsteroidal anti-inflammatory medications, ulcers may also cause heartburn, bloating, nausea and intolerance of fatty foods. Smoking, eating spicy foods, drinking alcohol and untreated stress may increase one's risk of developing ulcers.9‘Peptic Ulcer.’ Mayo Clinic, Mayo Foundation for Medical Education and Research, 6 Aug. 2020, www.mayoclinic.org/diseases-conditions/peptic-ulcer/symptoms-causes/syc-20354223.
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