Yale study finds nearly half of older adults improved with age
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- Yale researchers analyzed data from more than 11,000 participants in the federally funded Health and Retirement Study, tracking them for up to 12 years and measuring cognition via a global assessment and physical function via walking speed
- The study found 45% of adults 65 and older improved in at least one area — 32% cognitively and 28% physically — with many gains large enough to be considered clinically meaningful
- Becca R. Levy, lead author and professor of social and behavioral sciences at the Yale School of Public Health, said the gains disappear when data is averaged but emerge clearly when individual trajectories are tracked
- Levy's team found that older adults with more positive age beliefs at the study's start were significantly more likely to improve in both cognitive performance and walking speed, even after adjusting for age, sex, education, chronic disease, and depression
- The findings challenge the idea that later-life gains merely reflect recovery from illness — even participants who started with normal cognitive and physical function frequently improved over time
- Published in the journal Geriatrics and funded by the National Institute on Aging, the work builds on Levy's stereotype embodiment theory linking societal age stereotypes to measurable biological effects
Why it matters: With 45% of older adults in the study improving rather than declining, the data undermines the default clinical and cultural assumption that aging is purely a story of loss. Because positive age beliefs drove those gains and are modifiable, Levy argues interventions could reshape preventive care and rehabilitation investment for the over-65 population.
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