Atlas One · Host Biology · Scale 07 — System

Gut Microbiome

~10¹³ microorganisms (Firmicutes, Bacteroidetes, Actinobacteria) colonizing the GI tract. Functions: SCFA production (butyrate, propionate), vitamin synthesis, colonization resistance, immune education, bile acid metabolism, gut-brain axis serotonin.

Also known as: gut microbiome, gut microbiota, intestinal microbiome, gut flora, microbiota, human microbiome

Scale 07 — SystemScale
draftStatus
2026-06-06Last Reviewed
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gut-microbiome

Gut Microbiome

~10¹³ microorganisms (Firmicutes, Bacteroidetes, Actinobacteria) colonizing the GI tract. Functions: SCFA production (butyrate, propionate), vitamin synthesis, colonization resistance, immune education, bile acid metabolism, gut-brain axis serotonin.