Constipated, pulled out, black shit. What's going on?

Constipated patients pull out black stools may be related to food factors, drug factors, disease factors, etc.

1, food factors

intake of animal liver, blood products, iron in food will be oxidized into black iron sulfide, resulting in black stool color; if less water, cellulose intake is too small, it will lead to dry hard stool, resulting in the above phenomenon.

2, drug factors

If you are taking blood iron, bismuth treatment of stomach diseases and other drugs, it will also lead to constipation and black stool.

3, disease factors

Esophageal foreign bodies, ulcers, intussusception and other diseases caused by gastrointestinal bleeding and intestinal contents discharge is not smooth, will cause constipation and stool is black.