Intermittent black stool what's going on?

Intermittent black stool may be caused by diet influence, drug influence, disease influence and other reasons. Details are as follows:

1. Diet influence

eating certain foods such as pig liver, pig blood, chocolate, etc., food may not be fully digested and absorbed, and stool color becomes dark and black.

2. Drug influence

If ferrous sulfate, ferrous succinate, colloidal bismuth and other drugs are improperly used, it is easy to cause black iron sulfide generation, resulting in stool color blackening.

3. Disease affects

patients with gastric ulcer. Ulcer surface is prone to bleeding due to food stimulation, and stool blackening occurs.