Black stools may be related to dietary factors, medications and upper gastrointestinal bleeding.
1. Dietary factors: If you have recently consumed animal blood products, liver or eaten too much dark green vegetables, it may lead to the phenomenon of black stools, which is a normal phenomenon.
2. Drug factors: non-steroidal anti-inflammatory drugs, antiplatelet and anticoagulant drugs may directly or indirectly cause gastrointestinal bleeding and lead to black stools. If patients take bismuth, iron, due to the chemical reaction of drug components in the digestive tract and black stool.
3. Upper gastrointestinal bleeding: patients with upper gastrointestinal bleeding will have black stool because there is blood in the feces and it reacts with digestive juices. Common diseases include gastric ulcer, duodenal ulcer, acute erosive-hemorrhagic gastritis, and ruptured and bleeding esophageal varices at the base of the stomach.
It is recommended that people with black stools do further detailed examination, if it is clear that the disease is caused by the need to actively cooperate with the doctor’s treatment.