Why almost every second person over 65 gets better, not worse

A familiar scene

Someone in their mid-seventies tries something again after years away—a bicycle, a long hike, a new sport—and is surprised to find that it does not go worse than it did decades ago. On some days, it even goes better. The obvious response is to attribute this to the individual: their body, their unusual constitution, the one exception while most people inevitably decline.

A recent longitudinal study from researchers associated with the Yale School of Public Health suggests that this may have less to do with the body than with the mind. Behind it lies an assumption that hardly anyone questions: ageing means decline, steadily and inevitably. For a surprising number of people, that is simply not true.

What the study shows

The team led by Becca Levy and Martin Slade analysed data from more than 11,300 participants in the Health and Retirement Study, a long-running, publicly funded study of older Americans. Over a period of up to twelve years, two measures were assessed repeatedly: global cognitive performance and walking speed, an established research indicator of physical health in later life.

The result: 45 per cent of people over 65 improved in at least one of the two areas during the observation period. Thirty-two per cent showed cognitive improvement and 28 per cent physical improvement, with some improving in both. Notably, this also applied to people who showed no particular advantage at the start of the study—not only to exceptionally fit individuals.

A second finding makes the study particularly interesting for longevity research. The difference between those who improved and those who did not was not primarily found in exercise or nutrition, the factors prevention efforts usually examine first. It lay in attitude. People who began with more positive beliefs about their own ageing were significantly more likely to improve, even after age, gender, education, pre-existing conditions and depression had been statistically accounted for. Attitudes towards one's own ageing were therefore associated with actual development independently of these classic influencing factors.

An honest interpretation must also acknowledge that this is a single observational study examining a psychological construct. The data cannot conclusively establish whether positive age beliefs actually cause improvement or whether both arise together from other factors, such as greater social contact or a more active lifestyle. A causal claim would be premature. Yet the association itself is too clear to dismiss, especially given the long follow-up period and the size of the sample.

What this means for everyday life

The obvious conclusion is not to prescribe artificial optimism. It is to examine our own, often unconscious ideas about ageing. Many originate in childhood, in images of our grandparents or in social stereotypes, long before ageing concerned us personally. Anyone who notices that these images consist mainly of decline and loss can consciously add counterexamples: people around them who remain active, curious and capable at 70 or 80. This is no substitute for exercise, a balanced diet or healthy sleep. But it is a factor that prevention has often overlooked, even though—unlike the year of our birth—we can actively influence it.

The connection to longevity.days

This often overlooked factor is precisely where longevity.days begins. On 30 and 31 January 2027 in Fürstenfeldbruck near Munich, the focus will not only be on biomarkers, training plans and nutrition concepts, but also on the mental side of longevity. In a short reflection format, visitors can make their own, often unconscious age beliefs visible as a complement to the established topics of movement, nutrition and sleep. Those who wish may take home not a measurement, but a new question to ask themselves.

Sources

• Levy, B. R. & Slade, M. D. (2026). Aging Redefined: Cognitive and Physical Improvement with Positive Age Beliefs. Geriatrics, 11(2), 28. https://doi.org/10.3390/geriatrics11020028
• Yale University via ScienceDaily, 21 June 2026: https://www.sciencedaily.com/releases/2026/06/260620100428.htm

Claim rating: 🟡

A large, methodologically sound longitudinal study with more than a decade of follow-up and adjustment for key confounding factors. It nevertheless remains a single observational study of a psychological construct without established causality. The article therefore presents an association, not proof, and makes no promise of a health benefit.