What was the reason for the black shit yesterday?

Black stool refers to black stool, yesterday began to pull black stool may be caused by dietary factors, the use of drugs, gastrointestinal bleeding and other reasons.

1. Dietary factors

When ingesting a large number of black foods, such as black fungus, mulberry, black beans, etc., after digestion, will form black stools.

2. The use of drugs

When ingesting supplements containing iron elements, such as ferrous sulfate tablets, dextran iron tablets, ferrous gluconate syrup, etc., which contain a large amount of iron elements, after oxidation in the body to form black iron salts, mixed with stool, it will appear black stool.

3. Gastrointestinal bleeding

Gastric ulcer, duodenal ulcer, gastroesophageal reflux disease, esophageal varices and other digestive tract diseases may cause gastrointestinal bleeding, when the digestive tract blood and digestive juice mixed reaction, patients will appear black stool.