A recent study in Nature Medicine reveals that the risk of developing dementia by age 95 is a staggering 42%, doubling previous estimates. This risk is even higher for women, Black individuals, and carriers of a specific Alzheimer’s-related gene. The study highlights that from age 55 to 75, the risk remains low at about 4%, but it increases sharply after 75. Researchers have identified 14 life events or risk factors that contribute to dementia, ranging from early-life education to later-life hearing loss. These factors are actionable, suggesting that public health strategies could significantly reduce dementia risk. Progress has been made in areas like smoking bans and sports safety, but more comprehensive efforts are needed. The study underscores the urgency for national policies promoting healthy aging to mitigate this growing public health challenge.
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