Microbiome

New research looks at the surprising similarities in the gut microbiomes of hunter-gathers in Tanzania and horticulturalists in Bolivia, and asks: What role do these bacteria play in human health?

Wellness influencers often talk about fixing a broken gut microbiome. And marketers sell tests and supplements to fix your gut health. Here's what what the evidence really shows about gut health.

One of humanity's great quests made microscopic in the aging intestines of tiny monkeys.