What is black feces?

Fecal blackening is caused by dietary factors, drug factors, disease factors, etc.

1. Dietary factors

Recently eating too much iron-rich foods, such as red dates, spinach, pig liver, pig blood, duck blood, etc., can lead to fecal blackening.

2. Drug factors

Patients use iron, bismuth pectin, bismuth potassium citrate and other drugs due to physical reasons, which can lead to fecal blackening. Generally, they can return to normal after stopping the drug.

3. Disease factors

Fecal blackening is also considered to be related to esophagitis, esophageal ulcer, esophageal hiatus hernia, gastric polyps, acute gastric dilatation, gallstones, biliary ascariasis and other diseases.