What is the cause of the black shit

Black stools are considered to be caused by physiological factors, drug factors, disease factors, etc.

1. Physiological factors

Recently, a large number of iron-rich foods, such as red dates, pig liver, pig blood, duck blood, sheep liver, etc., can lead to black stools, belonging to normal physiological phenomena, generally without special treatment.

2. Drug factors

Patients due to physical reasons use iron, bismuth, etc., can cause black stools, generally after stopping symptoms gradually relieved.

3. Disease factors

Pull black stools may also be related to esophagitis, esophageal ulcer, esophageal hiatus hernia, esophageal gastric varices rupture, acute gastric dilatation and other diseases.