Science

Gut microbes that trace ancient human journeys

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Briefings

A 2026 study reveals that Indigenous African Hadza and South American Tsimane groups share specific gut microorganisms, suggesting these microbes acted as a biological bridge during human dispersals from Africa. This finding helps explain how microbial communities were lost or preserved in industrialized societies. The research indicates that shared microbes may have facilitated human migration patterns, though the exact mechanisms remain partially understood.

Key points

• Indigenous African Hadza and South American Tsimane share specific gut microorganisms that likely facilitated human dispersals.
• The study provides insights into microbial losses in industrialized societies by comparing these two distinct populations.

Context

This research compares gut microbiomes of Indigenous African Hadza and South American Tsimane groups to trace human dispersals and microbial losses in industrialized societies.

Limitations

Evidence is limited to two specific populations; causal links between shared microbes and migration are inferred rather than proven. Microbial loss mechanisms in industrialized societies remain unquantified.

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