Inability to absorb nutrients can lead to symptoms such as diarrhea and weight loss, but symptoms can also be very subtle.

Blood tests can be highly suggestive of a celiac disease diagnosis, but small bowel biopsies remain the definitive way to ...

The first of three sections of the small intestine, the duodenum, produces large quantities of mucus to protect the intestinal lining from acid in the chyme. Measuring about 20 feet (6 meters ...

This stage usually means there is intestinal lining disease ... It’s also limited to the small intestine. Crohn’s disease can affect any part of the digestive tract and appears to be related ...

Did you know if you unfolded your intestines, they'd be taller than a giraffe? Yep, they form a digestive tube so lengthy it's got two sections. The so-called small intestine is about 22 feet long ...

Stomach ulcers are sores that form on the stomach lining or the first part of the small intestine, known as the duodenum. Healthcare experts may also refer to stomach ulcers as: peptic ulcers ...

Pathogen-fighting immune cells called tissue-resident memory CD8 T cells (TRM cells) go through a surprising transformation—and relocation—as they fight infections in the small intestine.