Black stool may be what

Black stool is black stool, may be physiological factors, may also be caused by drugs, gastrointestinal diseases and other factors.

1, physiological factors

If you eat a lot of iron-rich green leafy vegetables, or eat a lot of animal blood, the iron element contained in the food can not be completely digested and absorbed by the human body, it will combine with the sulfide in the intestinal tract to produce black iron sulfide, resulting in black stools.

2, drug factors

If you take non-steroidal anti-inflammatory drugs for a long time, such as ibuprofen, aspirin, etc., may damage the gastric mucosa, leading to gastrointestinal bleeding, or take iron, bismuth and other drugs, the ingredients in the digestive tract chemical reaction, will produce black stools.

3, gastrointestinal diseases

If you suffer from peptic ulcer, upper digestive tract tumor, gastric polyps, esophageal ulcer, esophageal varices and other diseases, may cause upper gastrointestinal bleeding, due to blood in the intestinal tract for too long, after oxidation with the stool discharge, will produce black stool.