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2d ago

Avoiding High Blood Pressure, Diabetes and Smoking in Midlife Linked to Nearly 13 Extra Dementia-Free Years

A long-running ARIC cohort analysis bolsters calls for midlife risk screening and prevention while authors stress the results show association not proof of cause.

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Scientia Professor Henry Brodaty, the 2026 Senior Australian of the Year, is co-director of the Centre for Healthy Brain Ageing at the University of NSW in Sydney. Picture supplied

Overview

  • Researchers analyzed 12,409 participants from the Atherosclerosis Risk in Communities study who were about 56 on average and followed them for roughly 26 years to compare dementia outcomes.
  • People who had none of the three midlife vascular risks—elevated blood pressure, diabetes, and current smoking—lived nearly 13 more years without dementia than those who had all three.
  • The study measured risk factors only once in midlife and therefore cannot prove that avoiding those risks caused the longer dementia-free survival, according to the authors.
  • Results showed differences by sex and race: women tended to live longer dementia-free than men, and white participants had more dementia-free years than Black participants, pointing to equity and access issues for prevention.
  • Experts and policymakers are using the finding alongside WHO guidance and randomized coaching trials to support programs for midlife blood-pressure and diabetes control, smoking cessation, and scaled prevention efforts.