Constipated, black shit.

Constipated black stools may be caused by dietary factors, drug effects, upper gastrointestinal bleeding, intestinal diseases and other reasons. 1. Dietary factors Recently eaten more iron-rich or dark foods, such as animal blood, liver, black sesame, etc., may lead to black stool color. This is usually a normal physiological phenomenon, stop eating related foods after stool color will gradually return to normal. 2. Drug influence Taking certain drugs, such as iron-containing preparations, bismuth agents, etc., can also cause blackening of stools. This is a normal reaction of drugs and can generally be improved after stopping the drug. 3. Upper gastrointestinal bleeding When bleeding occurs in the stomach, duodenum, etc., the blood will appear black after digestion in the digestive tract, resulting in black stools. At the same time, constipation may be caused by factors such as slow intestinal motility caused by bleeding. This situation is more serious and requires timely medical examination and treatment, such as gastroscopy, to clarify the cause of bleeding and targeted treatment. 4. Intestinal diseases Some intestinal diseases, such as intestinal tumors, may cause bleeding and constipation to occur at the same time. This requires further examination, such as colonoscopy, imaging, etc. If constipation occurs with black stools, and diet and drug factors are ruled out, great attention should be paid to it, seek medical attention as soon as possible, conduct detailed examination and diagnosis, so as to clarify the cause and take appropriate treatment measures. At the same time, attention should be paid to maintaining good eating habits and lifestyles in daily life to promote intestinal health.