Quick answer
Gut microbiome: definition
The gut microbiome is the community of trillions of bacteria, fungi and other microbes living in the digestive tract, along with their genes and metabolic activity.
Gut microbiome, explained
Gut microbes ferment dietary fiber into short-chain fatty acids, influence immune function and communicate with the brain via the gut-brain axis. Diversity is generally considered a marker of a healthy microbiome.
Why it matters
Diet — especially plant diversity and fermented foods — is a powerful lever for microbiome health.
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Gut microbiome FAQs
What is Gut microbiome?
Why does Gut microbiome matter?
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