Black and dry shit. What's going on?

Black and dry stools may be caused by dietary factors, constipation, upper gastrointestinal bleeding and other factors, the specific analysis is as follows:

1. Dietary factors

If you often eat chicken blood, pig blood, duck blood and other blood products, and drink less water, the hemoglobin in the blood products will be oxidized in the intestinal tract to form divalent iron ions, causing black and dry stools.

2. Constipated

patients with slow intestinal motility, food retention in the intestinal tract and continuous reaction with air, bacteria, oxidation phenomenon, and colon absorption of water in feces, will cause black and dry stools.

3. Upper gastrointestinal bleeding after the upper gastrointestinal

bleeding blood will be digested through the digestive tract, blood after digestion and absorption of gastric acid, intestinal juice, oxidation reaction will occur, if this time combined with dyspepsia, intestinal motility is too slow, will make stools black and dry.