I'm happy to answer your question.
If you eat animal blood, fleshy liver, or iron or carbon, your stool can be black. In the former case, the fecal occult blood test can be positive. Common black stools are as follows:
1, digestive tract diseases: The most common causes of hematochezia include esophageal varices, esophageal foreign bodies, ulcers, acute gastritis, gastric mucosal prolapse, intussusception, hemorrhagic necrotizing enteritis, strangulated intestinal obstruction, Meckel's diverticulum, intestinal polyps, anal fissure, etc.
2, blood diseases: neonatal bleeding, hemophilia, leukemia, aplastic anemia, thrombocytopenia and allergic purpura.
3. Other systemic infectious diseases, such as septicemia and typhoid fever. The newborn swallows mother's birth canal blood or nipple rupture blood, nasal cavity, pharynx, gingival bleeding, etc.
4, the influence of food or drugs: Some foods and drugs can also cause changes in stool color, sometimes easily confused with blood in the stool. For example, eating a lot of watermelons and tomatoes in summer will turn the stool color red, anemia children will turn black after eating iron, and the stool color will turn black after eating animal blood. These changes in stool color caused by food and drugs are not bloody stool.
If you are not sure, please go to the hospital for a check-up.
I hope my answer is helpful to you. Please consult me again if you have any questions. Wish you good health.