What's black shit?

There are many reasons why stool is black, including physiological factors, digestive system diseases, blood diseases, etc.

1. Physiological factors

If you ingest some foods, such as animal viscera, animal blood or black beans, black sesame seeds, etc., you can cause stool blackening.

2. Digestive system diseases such

as gastric ulcer, duodenal ulcer, esophageal ulcer and acute gastritis can cause gastrointestinal bleeding. At this time, the trivalent iron ions in the blood will become divalent iron ions, resulting in black stools.

3. Blood diseases such

as hemophilia, leukemia, aplastic anemia, allergic purpura and other diseases may also cause stool blackening.