Brown poop is normal and comes from a pigment called bilirubin. Green poop can happen from eating foods like spinach or due to gastrointestinal infections or severe diarrhea. Black, tarry poop can ...

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 ...

Stool changes with pancreatic cancer can include diarrhea, foul-smelling stool, constipation, and changes in stool color. The pancreas is an organ between the stomach and the spine that helps the body ...