What can cause black diarrhea?

Answer by  MTGrandma (405)

Black diarrhea can be caused by blood in the stool or even by whatever you have eaten. Eating a hefty amount of chocolate can cause it or even some types of dark fruits and vegetables. Think of the BRAT diet for diarrhea; "bananas, rice, applesauce and toast".

Answer by  HawaiianGirl (6906)

Yes, black tar like diarrhea could be an indicator of blood somewhere in the digestive tract, it could also be soething you ate. Contact a doctor if it persists.

Answer by  km8738 (1917)

Black Diarrhea is not always caused by the presence of blood. However, if it is blood, it can sometimes be caused by a hemorrhoid.

Answer by  Purple (948)

Black means old blood. You may have an ulcer bleeding, to much iron or intestinal bleeding. This should be checked out to see why your bleeding inside.

Answer by  monkeyz (3150)

Black indicates blood or some kind of dark food (like berries). If it were red blood, it would indicate lower intestine bleeding, but if it is black it means that there is blood somewhere in the stomach or small intestine. This can be caused by ulcers as well as crohn's disease and similar disorders.