Narrow stools can be caused by various factors. Learn what causes narrow stool and how to make the shape regular again.

An estimated 10-15 percent of American adults suffer from irritable bowel syndrome (IBS). Proper diagnosis from a medical professional is important for getting effective treatment and relief.

Black poop in the toilet can be distressing, but there are lots of reasons why black stool happens, and not all of them are serious.

Yellow poop or yellow diarrhea can have many causes, and though it's often harmless, it can indicate a more serious health issue. Experts explain how to tell why your poop is yellow and when to see a ...