Bright red blood in your stool, also known as hematochezia, is a sign of bleeding in the lower digestive tract. It is most likely caused by a condition like hemorrhoids or diverticular disease.

An expert MD explains what red poop could mean for you, from harmless causes to signs of something more serious.

These long periods of inflammation can cause sticky mucus to build up in your airways ... Other causes "If you're coughing up bright red blood, the blood is likely new or fresh.