Microbiome

Brain Disorders May Start in the Gut — So Let’s Treat Them There

Dogfish sharks produce a remarkable antibacterial compound that might halt symptoms of Parkinson’s disease.

By Amanda Schaffer

What if Number 2 Makes You Number 1?

Elite athletes have a greater variety of bacteria in their guts than couch potatoes do, raising the prospect of “poop doping.”

By Elizabeth Preston

Skinny Genes

Anorexia may originate in your gut and your DNA, not in fashion magazines.

By Christina Farr