Lifestyle Could Prevent Nearly Half of Dementia

Emerging synthesis suggests up to ~45% of dementia cases are linked to 14 modifiable risk factors and could be markedly reduced by population‑level lifestyle changes — notably physical exercise, hearing care, sleep, and vascular risk control. That means prevention programs (school PE, public‑health promotion, routine clinical exercise 'prescriptions') could plausibly cut future dementia burden as much or more than near‑term pharmaceutical advances. — If true and actionable, this shifts resource and political attention from a narrow drug‑hunt toward prevention policy, education, and health‑system redesign with large social and fiscal consequences.