A new study from Yale University researchers indicates that 45% of older adults showed improvement in cognitive function, physical function, or both over a 12-year period. The findings, published in the journal Geriatrics, challenge the predominant belief that aging is characterized by inevitable and continuous decline. Lead author Professor Becca Levy, a professor of social and behavioral sciences at Yale, stated that the results reveal a different narrative than conventional stereotypes about aging.
Study Findings and Cognitive Improvement
The improvements were observed across a nationally representative sample, not just among a small group of high performers. The research relied on data from the federally supported Health and Retirement Study, a long-running survey of older Americans. Over the 12-year period, researchers tracked changes in cognitive performance using standard global tests and measured physical function based on walking speed, considered a key indicator of overall health and disability risk. About 32% of participants showed cognitive gains, while 28% improved physically.
Levy noted that analyzing individual trajectories revealed a different story than simply averaging the data. “If you average everyone together, you see decline,” Levy said. “But when you look at individual trajectories, you uncover a very different story. A meaningful percentage of the older participants got better.”
Role of Age Beliefs and Positive Mindset
A participant’s beliefs about aging were a significant factor linked to the likelihood of improvement. The study found that individuals with more positive age beliefs were significantly more likely to show gains in both cognition and walking speed, even after accounting for factors such as age, sex, education, chronic disease, and depression. Levy explained that “individuals who have taken in more positive age beliefs tend to have a lower stress response and lower stress biomarkers.” Because age beliefs are considered modifiable, the research suggests there is capacity for cognitive and physical improvements later in life, aligning with other research indicating that lifestyle factors such as remaining physically and socially active can promote brain function.
This article is an AI-assisted summary. All facts and figures are drawn from the original report: https://www.naturalnews.com/2026-03-28-study-half-of-seniors-show-cognitive-or-physical-improvements.html