What's wrong with suddenly blackening?

There are many reasons for sudden black stools, including dietary factors, drug factors, disease factors, etc.

1. Dietary factors A

large intake of animal blood, viscera or some dark vegetables, etc., will lead to iron can not be completely digested, oxidized with feces, will appear black stools phenomenon.

2. Drug factors The

use of certain drugs, such as iron, bismuth, antacids, etc., can occur in the intestinal oxidation, resulting in black stools.

3. Disease factors

Gastric ulcer, duodenal ulcer, gastric cancer and other diseases will cause upper gastrointestinal bleeding, blood in the intestinal oxidation, will make stools appear black.