Black poop can be caused by foods or medications. Stool may also be black becasue of blood in the digestive tract, known as melena. A small drop of red blood is usually due to minor hemorrhoids but ...

Constipation and blood in the stool can occur at the same time, due to many different reasons. For most people, blood in stool may occur due to issues with bowel movements, tears to the anus, or ...