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Ancient Gene Variant Shields Against Norovirus, Study Reveals

10/25/2025

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Summary

Story summary

A study finds that a FUT2 gene variant providing immunity to Norovirus emerged around 6,000 BCE among early European farmers.
Researchers analyzed DNA from 4,343 prehistoric individuals to show the variant became prevalent due to close living conditions and poor sanitation.
About 20% of Swedes carry two copies of this protective gene, increasing the risk of stomach ulcers and gallstones.

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Story summary

A study finds that a FUT2 gene variant providing immunity to Norovirus emerged around 6,000 BCE among early European farmers.
Researchers analyzed DNA from 4,343 prehistoric individuals to show the variant became prevalent due to close living conditions and poor sanitation.
About 20% of Swedes carry two copies of this protective gene, increasing the risk of stomach ulcers and gallstones.