The gut microbiome is an important ecosystem of microbes that lives in each one of us, and its strength affects our overall health. However, the small intestine is an underappreciated part of the gut ...

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, ...

People are often reminded that they are their own unique person -- and a new study says that's particularly true of the digestive tract. Dissections of a few dozen deceased individuals revealed ...

Crohn’s disease can cause inflammation in any part of your gastrointestinal tract. Most commonly, people have it in their small bowel, also called your small intestine. This is referred to as small ...

Everyone has bacteria in their gut. They play a key part in digestion. But these bacteria live mostly in your large intestine, or colon, not your small intestine. When too many of the wrong kind of ...