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, ...

Superior mesenteric artery syndrome is a rare type of compression of the small intestine. It’s a treatable condition, but a delayed diagnosis can lead to more severe symptoms or even death. SMA ...

Ampullary cancer is a rare form of cancer that develops in the ampulla of Vater. This is a small opening located on the duodenum, which is the first section of the small intestine. Secretions from the ...

Patients with celiac disease have impaired microbial fiber metabolism and fewer fiber-metabolizing gut microbes. Adding inulin fiber and specific bacteria may speed healing.