Aging is often talked about as a straight line down. New research from the Yale School of Public Health suggests that picture is wrong for a huge share of older adults. Tracking more than 11,000 Americans aged 65 and older for up to 12 years, the team found that 45% improved in cognitive function, physical function, or both over the follow-up period.
The gains were not trivial. About 32% of participants improved on a global cognitive test, and 28% got faster on a standard walking-speed measure, with many crossing thresholds that are considered clinically meaningful. The study was published this year in the peer-reviewed journal Geriatrics and was funded by the National Institute on Aging.
Mindset made a measurable difference
The second finding is what makes the numbers actionable. People who held more positive beliefs about their own aging at the start of the study were significantly more likely to show these later improvements, even after adjusting for age, sex, education, chronic disease, and depression. In other words, the mindset link was not just a proxy for being younger or healthier.
Beliefs about aging were measured with the Attitude Toward Own Aging subscale of the Philadelphia Geriatric Center Morale Scale, a validated questionnaire in which higher scores reflect more positive views of later life.
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Lead author Becca R. Levy, a professor of social and behavioral sciences at Yale School of Public Health, said the pattern was strong enough to change how researchers talk about later life. "Improvement in later life is not rare, it's common, and it should be included in our understanding of the aging process," Levy said.
What the data actually looked at
The participants came from the Health and Retirement Study, a long-running federally supported survey of older Americans. Cognitive function was assessed with recall and working-memory tasks, and physical function was measured by asking participants to walk at their normal speed over a set distance, using a cane or walker if needed. Measurements were repeated roughly every two years.
Because the analysis followed the same people over time, the researchers could see individual trajectories rather than just group averages. That matters, because group averages tend to hide the sizable minority who move upward. When only means are reported, older adults who are stable or improving effectively disappear into a downward trend line.
What it means in practice
The study is observational, so it cannot prove that changing your view of aging causes cognitive or physical gains. It does, however, add to a growing body of Levy's own work suggesting that beliefs about aging are linked to how the body and brain age. That is a modifiable factor, unlike genetics or chronological age.
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Anyone noticing meaningful memory changes, unsteady walking, or a sudden drop in stamina should still talk with a clinician, since those can signal treatable conditions. The takeaway from the Yale data is narrower and more hopeful. Decline is not the only story after 65, and a sizable share of older adults move in the opposite direction.
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This article is made and published by Jesper Bengtson, who may have used AI in the preparation.