Common causes of black poop include dark-colored foods and certain medications. Bleeding in the upper GI tract may cause black, tarry, foul-smelling stool. Seeing a doctor if you have unexplained ...

Causes of black stool: Consuming certain dark foods, such as black licorice, blueberries, or foods with deep colouring, can temporarily darken stool (Images: Canva) A jet‑black, sticky stool that has ...