Between the important role of bacteria, the use of antibiotics and autoimmune conditions, there's a lot to talk about. Here's what doctors think.

New research shows gut bacteria “sniff out” lactic and formic acids, shaping how microbes grow, interact, and influence human health.

Two months after his gastric bypass surgery, the impact of Bruce Melvin's new, leaner look became abundantly clear as he stood behind his lawn mower, his now-oversized pants bunched up around his ...

The community of microbes that live in the gut, known as the gut microbiome, may have fueled the evolution of humans' huge brains, a new study suggests.