Microbes, mood, and mental health

gut microbes

Clostridium on gut lining. Color-enhanced scanning electon micrograph. Credit: Med. Mic. Sciences Cardiff University / Wellcome Images

 Everyone has had a “gut feeling”—some liken it to “butterflies” in the stomach before a stressful event, while others deem it a type of intuition—and scientists are bringing this age-old phenomenon into the present-day lab in order to better understand how mental health disorders arise and how they might be treated better.