If Americans over 40 moved as much as the most active 25% of the population, they could live five years longer on average, according to a new study published in the British Journal of Sports Medicine.
For the least active people, the potential benefits are even more dramatic—up to 11 extra years of life.
It’s no secret that regular physical activity lowers the risk of diseases like heart disease and stroke, as well as early death. But this study offers a clearer picture of how much activity could extend life expectancy in specific groups.
Researchers created a model using data from U.S. population surveys, health statistics, and activity tracker data from people aged 40 and older.
They estimated the impact of different levels of daily physical activity on lifespan.
Key findings
- More Movement, More Years:
The most active 25% of Americans walk about 160 minutes a day at a normal pace of 4.8 km/h (3 mph). If everyone over 40 matched this level of activity, the average life expectancy would increase by over five years—from 78.6 years to nearly 84 years. - Biggest Benefits for the Least Active:
For the least active 25% of the population, adding 111 minutes of walking daily could increase their life expectancy by almost 11 years. This group sees the biggest boost in lifespan for every extra hour of walking. - Hour-for-Hour Gains:
Among the least active, each additional hour of walking could add six hours to their life expectancy. For people already active, the benefits are smaller but still significant—an extra hour of walking adds nearly three hours to their lifespan.
This study highlights the powerful impact of physical activity, especially for people who are currently less active. It also shows that the more precise measurements used in this research reveal even larger health benefits than previously thought.
While the findings are promising, the researchers caution that encouraging more physical activity on a large scale is a complex challenge. They suggest strategies like:
- Building walkable neighborhoods.
- Investing in green spaces.
- Promoting active transportation options like cycling and walking.
These measures could make it easier for people to move more in their daily lives and enjoy the health benefits.
Takeaway
Even small increases in daily physical activity can make a big difference, particularly for those who are currently the least active.
Walking just a little more each day could help Americans live longer, healthier lives.
If you care about wellness, please read studies about how ultra-processed foods and red meat influence your longevity, and why seafood may boost healthy aging.
For more health information, please see recent studies that olive oil may help you live longer, and vitamin D could help lower the risk of autoimmune diseases.
