What is the reason for the black and green stool color

Stool color black green may be related to dietary factors, drug factors or disease factors.

1, dietary factors

if recently eaten more blood products or animal liver, such as pig blood, duck blood, pig liver, etc., help food contains more iron, chemical reaction occurs under the action of intestinal bacteria, resulting in black green stool.

2, drug factors

If recently taken with iron, bismuth drugs, due to the special nature of the drug, can also lead to black green stool.

3, disease factors

When gastric ulcer, esophageal varices and other diseases occur, can cause gastrointestinal bleeding, blood in the intestinal bacteria decomposition, can lead to black green stool.