Do wise people live longer?

Are Smarter People Likely to Live Longer?

It might sound like an old wives' tale, but science increasingly suggests there's truth in it: smarter people tend to live longer. While intelligence doesn’t grant immortality, decades of research point to a strong link between cognitive ability in childhood or youth and longevity.

One of the most comprehensive reviews on the topic found that a 15-point advantage in IQ—about one standard deviation on a standardised scale—correlates with a 24 per cent lower risk of death over the following decades. That’s a significant difference, and it holds even after accounting for factors like socioeconomic status, education, and access to healthcare.

It’s not that intelligence magically protects against illness. Instead, higher cognitive ability often leads to better decision-making—choices around diet, exercise, smoking, and risk-taking. Smarter individuals are more likely to understand health information, follow medical advice, and avoid hazardous behaviors. They may also find themselves in safer environments or more stable jobs, indirectly supporting longer lives.

Additionally, intelligence in youth can be an early marker of underlying biological resilience—faster neural processing, better self-regulation, and even more robust brain structure—all of which may contribute to overall health.

Still, intelligence alone doesn’t guarantee a long life. Genetics, environment, luck, and access to care all play crucial roles. And wisdom—distinct from raw IQ—brings its own benefits, especially in emotional regulation and social connection, both tied to well-being.

In the end, while we can’t all boost our IQ dramatically, we can all learn from the habits of the thoughtful: staying informed, making mindful choices, and valuing long-term health over short-term gains. That kind of wisdom? It might just add years to your life.