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Gut microbes that trace ancient human journeys
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Gut microbes that trace ancient human journeys

Humans never travelled alone: as our ancestors spread from Africa, they carried gut microbes along with them. Researchers compared the gut microbiomes of the Indigenous Hadza people of Tanzania and the Tsimane people of Bolivia, whose populations diverged during prehistoric migrations. They found hundreds of microbial species shared by both groups, while genetic differences between their microbial strains broadly reflect the timing of those journeys. And here's the thing: many of these shared microbes are now rare or absent in industrialized populations, revealing a remarkable microbial legacy of human migration.
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