Why Is My Diarrhea Almost Black? Black, tarry diarrhea is often caused by bleeding in the esophagus, stomach or small intestine. Another common cause for black, tarry stool could be a bleeding ulcer in the stomach, or inflammation of your stomach lining (AKA, gastritis). What does dark brown almost black diarrhea mean? Black tarry stools
What Causes Diarrhea After Drinking Alcohol? Faster digestion: Alcohol agitates the intestines and causes them to react by speeding up digestion. The muscles in the colon contract more frequently, pushing stool out faster than usual. This quickening can lead to diarrhea, as the intestines do not have time to digest the passing food properly. How
What Does Throwing Up Black Vomit Mean? Your vomit may appear black if the blood has been oxidized by the acids in your stomach. The iron in your blood turns brown to black with time. Since the blood is no longer bright red, it means that the bleeding has either stopped or is only happening