Pooping is black refers to black stool, considering physiological reasons, peptic ulcer, upper gastrointestinal tract tumors and so on.
1. Physiological reasons: if you eat some black food, such as animal blood or animal liver, etc., there will be black stool symptoms, in addition to the use of some drugs, such as iron, will also cause the color of stool black.
2. Peptic ulcer: more common is gastric ulcer and duodenal ulcer, peptic ulcer will cause upper gastrointestinal bleeding symptoms, the blood will be discharged through the intestinal tract, in the process of discharging, the trivalent iron ions in the pepsin enzyme and other substances under the action of the divalent iron ions, so the performance of the black stool.
3. Upper gastrointestinal tract tumors: if you have tumors in the upper gastrointestinal tract, such as stomach cancer, etc., it will also cause bleeding symptoms and black stools.
There may be other reasons for black stool, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or standardized treatment.