Add Yahoo as a preferred source to see more of our stories on Google. Your small intestine is lined with tiny protrusions called villi that play a big role in digestion. Sebastian Kaulitzki/Science ...

It is normal to occasionally have stools that float in the toilet. Excess gas, diets high in fiber or fat, and digestive conditions can cause your stool to float. It's important to tell a doctor if ...

Much of the food you eat is absorbed by your digestive system, which includes your stomach and your intestines. But some of what you eat makes it all the way through those twists and turns and comes ...