A recent study published in Nature Medicine reveals the lifetime risk of developing dementia after age 55 has surged to 42%, effectively doubling earlier estimates. By 2060, projections indicate a million new diagnoses annually in the U.S., particularly among Baby Boomers. Factors contributing to this increased risk include aging, obesity, hypertension, and genetics, particularly the APOE4 variant. Health experts emphasize proactive measures such as managing blood pressure and remaining socially engaged to potentially lower these risks, highlighting the urgent need for early detection and better healthcare strategies.