Gut bacteria aren’t just passive passengers—they can actively send proteins straight into our cells. Using microscopic injection systems, even harmless microbes can influence immune responses and ...

Colorectal cancer is a type of cancer that starts in the colon or rectum, which are the last parts of the digestive system that helps remove waste from the body. It usually begins as a small growth or ...

Anyone who has weathered a bad stomach bug knows the feeling: a loss of appetite that sets in and lingers, even after the ...

A new study traces the molecular pathway connecting the gut immune system to the brain during a parasitic infection, ...

We asked four gastroenterologists which symptoms you should never ignore—and what they might signal.