Moderate Midlife Exercise Tied to Better Brain Health Decades Later, Study Reports Summary A study published Aug. 14, 2026, in the journal Neurology found an association between moderate physical activity in middle age and a reduced risk of cognitive impairment decades later. The report, from researchers at the University of California, San Francisco, analyzed data from 3,200 adults enrolled in the long-running Kaiser Permanente cohort. According to the study, participants who engaged in light or moderate exercise at least once per week in their 40s and 50s had 32% lower odds of developing mild cognitive impairment after age 70. The…

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