Do you catch yourself saying “I’m getting old” more than you’d like to admit? Turns out, that habit might be doing more damage than you think. Psychologist Becca Levy of Yale has spent decades studying how our aging mindset — the beliefs we hold about what getting older actually means — shapes how we physically and cognitively age. In a study following more than 11,000 older Americans over twelve years, nearly half showed improvement in either cognitive or physical function, a story that gets completely buried when you only look at averages. Her earlier research found that people with a positive aging mindset lived 7.5 years longer on average than those with negative views — a bigger effect than the difference between having high or normal cholesterol. The mechanism behind this is a process called stereotype embodiment: the cultural messages we absorb about old age become self-fulfilling prophecies through three pathways — psychological, behavioral, and physiological. That last one involves chronic stress and elevated cortisol levels that, over time, actually shrink the hippocampus and accelerate biological aging. I also look at Ellen Langer’s famous Counterclockwise study, one of psychology’s most striking demonstrations of the mind-body connection, and what the concept of neuroplasticity tells us about our capacity for growth at any age. Plus, I talk honestly about my own complicated feelings about getting older — and what the research suggests we can actually do about them.
References
- Currie, J. (2026, March 11). You can still improve as you age—with the right mindset. Nautilus.
- Langer, E. J. (2009). Counterclockwise: Mindful health and the power of possibility. Ballantine Books.
- Levy, B. R. (2023). Breaking the age code: How your beliefs about aging determine how long and well you live. William Morrow.
- Levy, B. R., Slade, M. D., Kunkel, S. R., & Kasl, S. V. (2002). Longevity increased by positive self-perceptions of aging. Journal of Personality and Social Psychology, 83(2), 261–270.
- Levy, B. R., et al. (2026). Aging Redefined: Cognitive and Physical Improvement with Positive Age Beliefs. Geriatrics, 11(2).
- Robson, D. (2025, December 15). How to build the mindset now proven to slow ageing. BBC Science Focus.
- Smith, D.G.. (2026, March 26). How a Healthy Mind-Set Influences Longevity. The New York Times.

