Pull out the black shit is what reason

Pulling out black stool is considered to be black stool, black stool may be caused by diet influence, stool accumulation, upper gastrointestinal bleeding and other reasons, specific analysis is as follows:

1, diet influence

If the patient eats a lot of dark food, such as pig blood, duck blood, etc., food pigment cannot be completely digested and absorbed, black stool may occur.

2, stool accumulation

If the patient has constipation, stool stored in the intestinal tract for a long time, food residue is easy to be oxidized, black stool phenomenon appears.

3, upper gastrointestinal bleeding

patients with peptic ulcer, esophageal and gastric varices cause upper respiratory bleeding, blood will lead to digestive juice and oxidation, can become black stool.