Understanding Melena: Causes and Treatments for Black Stool
What is Melena? Melena refers to the passage of black, tarry stools, often caused by upper gastrointestinal bleeding. This condition is different from stool discoloration due to food or medications. The dark appearance results from the oxidation of iron in blood hemoglobin as it passes through the digestive tract. Combined with bacterial breakdown, this creates … Read more