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Study identifies gene variants which protect older adults from neurodegeneration.

ft Newly evolved, uniquely human gene variants protect older adults from cognitive decline - neuroinnovations

The standard model of natural selection predicts that once the age of reproduction ends, individuals die. That’s because selection early in life strongly favors variants that benefit reproductive success, even at the cost of negative consequences late in life, one major reason humans age. This is indeed the case in almost all vertebrates. Humans are an exception to this rule,

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