The stool color is very black. What's going on?

Stool color is very black may be caused by food factors, drug factors, disease factors.

1, food factors

eat pig blood, sheep blood, beef, pig liver and other animal blood products or melanin more food, iron in these foods can form black iron sulfide in the intestinal tract, so that stool color blackened.

2, drug factors

If you recently took bismuth for the treatment of stomach diseases, blood iron, or some components of traditional Chinese medicine, it may also lead to stool blackening.

3, disease factors

Digestive tract bleeding, such as hemorrhoids, anal fissure, esophageal varices, ulcer disease, acute gastritis, gastric mucosal prolapse, intussusception, hemorrhagic necrotic enteritis, intestinal polyps, etc., after these diseases bleeding, hemoglobin in red blood cells under the action of intestinal bacteria easy to form iron sulfide, so that stool appears black.