How is black shit caused?

Black stool refers to black stool. The causes of pulling black stool are usually dietary factors, drug factors, disease factors, etc. Details are as follows:

1. Dietary factors

If the patient eats a lot of pig heart, pig liver, chicken blood and other foods, it is easy to cause excessive iron intake. Excess iron can be excreted with the stool at the same time, resulting in black stool.

2. Drug factors

If the patient takes ferrous gluconate syrup, ferrous sulfate tablets, dextran iron tablets and other drugs according to the doctor's recommendations, the color of stool will change after oxidation, resulting in black stool.

3. Disease factors

If the patient suffers from upper gastrointestinal bleeding, the divalent iron in the blood will generate trivalent iron after digestion, causing black stool.