Certain foods and medicines can cause black stool. Sometimes, black stool may even signal bleeding in the digestive tract.

Sean Gibbons, a microbiologist at the Institute for Systems Biology, joins The Excerpt to discuss what bowel movements reveal ...

If you've spotted mucus in your little one's diaper, here's what it might mean – and when to check in with a doctor.

But how does the same recommendation hold true for two opposite GI problems? While some kinds of fiber work better than ...