Why does black stool occur when you have diarrhea?

When some people have diarrhea and their stools are black, they need to pay attention to whether it is caused by a digestive tract disease. Common stomach or duodenal diseases may induce these symptoms, so we need to first identify the cause and then treat it correctly.

1. Diarrhea is one of the common diseases in daily life. Most people with diarrhea have yellow or yellow watery stools, but some people have black stools. What are the causes of diarrhea and black stools? In fact, there are many reasons why stools may turn black.

2. Diarrhea and black stools may be caused by diseases in the digestive tract. When a person has bleeding in the stomach, duodenum, upper jejunum, esophagus, pancreas or bile duct of the upper gastrointestinal tract, the iron in the hemoglobin contained in the red blood cells will combine with sulfide to become iron sulfide, and we can see the patient's stool turn black. There are also some digestive tract diseases that can cause diarrhea and black stools, so everyone should pay more attention. Such as acute gastritis, gastric ulcer, intussusception, intestinal polyps, gastric mucosal prolapse, esophageal varices, etc.

3. Diarrhea and black stools may also be related to liver disease. If you suffer from cirrhosis, it is easy to cause gastrointestinal bleeding, making the stool black. In addition, portal hypertensive gastric mucosal lesions and ruptured bleeding of esophageal varicose veins can also cause black stools. When the patient's stools are black, it means that these diseases are very serious and severe bleeding may have occurred in the body. Therefore, patients with cirrhosis should not be careless when they find their stools are black.

4. Black stools may also be related to the food and medicines people consume. When eating animal blood, animal liver, or excessive consumption of meat, the iron in these foods will combine with sulfide in the human intestines, turning into iron sulfide, and the color of the stool will turn black. In addition, taking some medications can also cause black stools, such as iron supplements for blood tonic, oral activated carbon powder, bismuth preparations used to treat stomach problems, and some special Chinese medicines, all of which will react in the human body and turn the stools black.

5. Diarrhea and black stools may also indicate that the patient has some blood diseases, such as leukemia, aplastic anemia, hemophilia, neonatal hemorrhagic disease, thrombocytopenia, etc.

6. Diarrhea and black stools may be small warnings from the body. We cannot ignore them easily, but we don’t need to be too nervous. If you find that you have diarrhea and your stool is black, it is best to go to the hospital for relevant examinations immediately.