Your poop's colour can reveal surprising health insights, according to a Harvard physician. While green or purple hues might ...

A sudden change to black, tar‑like stool, known as Melena, may signal bleeding somewhere in the upper digestive tract. While diet, supplements or medications sometimes explain the change, persistent ...

Study shows most pediatric melena cases stem from upper gut ulcers, mainly //duodenal * Even 50-100 mL of blood in the stomach can turn stool black . Suddenly finding that your ...