Villi are tiny projections in the small intestine that absorb nutrients from food. Diseases like celiac disease and inflammatory bowel disease can damage villi and cause malabsorption. Villi are ...

This story is part of a series exploring human anatomy and physiology complexities. Each story in this collection showcases discoveries reshaping our understanding of the body's inner workings, ...

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 ...