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New study: natural selection is getting rid of mutations that shorten human life

A massive genetic study led by Hakhamanesh Mostafavi, an evolutionary biologist at Columbia, suggests that evolution is weeding out certain genetic mutations in humans that shorten people’s lives. Mostafavi and his colleagues tested more than 8 million common mutations, and found two that seemed to become less prevalent with age. A variant of the APOE gene, which is strongly linked to Alzheimer’s disease, was rarely found in women over 70.
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