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Why does a higher IQ mean a longer life? Unpacking the Science of Longevity

Research has consistently shown a link between cognitive ability and lifespan; for example, a study following over 65,000 Scottish children found that higher childhood IQ was significantly correlated with lower mortality risk in adulthood. The complex question of **why does a higher IQ mean a longer life?** involves a multifaceted interplay of health behaviors, socioeconomic status, and genetics.