The poop is black. What's going on?

The stool is black, generally related to dietary factors, drug factors, upper gastrointestinal bleeding, etc.

1, dietary factors

If eating foods rich in iron ions, such as animal liver, animal blood, etc., excessive iron ions cannot be fully absorbed and utilized, it will combine with substances in the intestinal tract, resulting in black stool.

2, drug factors

If taking iron, bismuth, anticoagulant drugs, etc., it will also make the stool color black.

3, upper gastrointestinal bleeding

Excluding the above factors, stool color black may also be caused by upper gastrointestinal bleeding, generally related to peptic ulcer, upper gastrointestinal tumor, stress ulcer, esophageal and gastric varices rupture and other diseases.