Yale Study Finds Nearly Half of Older Adults Improved with Age
A Yale study found that 45% of adults aged 65 and older improved in cognitive or physical function over time. Positive beliefs about aging were linked to these improvements.
New research from Yale University offers a more optimistic view of aging. The study found that many older adults actually improve over time, and their beliefs about aging may play an important role in those gains.
Drawing on data from more than 11,000 participants in the Health and Retirement Study, a nationally representative long-term survey of older Americans, researchers discovered that nearly half of adults aged 65 and older experienced measurable improvements in cognitive function, physical function, or both. The findings suggest that improvement in later life is far more common than many people realize.
The study, published in the journal Geriatrics, analyzed data over a period of up to 12 years. During that time, 45% showed improvement in at least one of the two areas examined. Approximately 32% improved cognitively, while 28% improved physically. Many participants experienced gains large enough to be considered clinically meaningful.
“Many people equate aging with an inevitable and continuous loss of physical and cognitive abilities,” said Becca R. Levy, lead author and professor at the Yale School of Public Health. “What we found is that improvement in later life is not rare, it’s common, and it should be included in our understanding of the aging process.” Levy noted that these gains disappear when only looking at averages, but individual trajectories reveal a different story.
The researchers also explored why some older adults improved while others did not. They found that older adults with more positive beliefs about aging were significantly more likely to improve in both cognitive performance and walking speed. The relationship remained strong even after adjusting for factors including age, sex, education, chronic disease, depression, and length of follow-up.
The findings build on Levy’s stereotype embodiment theory, which proposes that age-related stereotypes absorbed from society can become personally meaningful and have measurable biological effects. Previous studies linked negative age beliefs to poorer memory, slower walking speed, and increased cardiovascular risk. The current study shows the opposite pattern can also occur: those with positive age beliefs often show improvement.
The improvements were not limited to people who began the study with impairments. Even participants with normal cognitive and physical function frequently improved over time, challenging the idea that later-life gains simply reflect recovery from illness.
The authors hope the results will shift public perceptions about aging and reduce the belief that continuous decline is inevitable. They also suggest the findings support greater investment in preventive care and rehabilitation programs. Co-author Martin Slade contributed to the study, which was funded by the National Institute on Aging.
