One Common Type of Physical Activity Linked to Higher Dementia Risk
Summary
A large study found that exercise done for fun or leisure, like walking or swimming, lowers the risk of dementia. However, physical activity done as part of a job is linked to a higher risk of dementia, possibly due to stress and unhealthy work environments.Key Facts
- The study included more than 4.2 million people from 30 countries, aged 45 to 93.
- Leisure-time exercise lowered dementia risk by about 24%.
- Physical activity done at work increased dementia risk by about 20%.
- Occupational physical activity often happens in tougher environments with pollution and stress.
- The research followed participants for about 10 years on average.
- Active commuting (like walking or biking to work) showed a small increase in dementia risk based on limited data.
- The study is the first to explore this "physical activity paradox" in relation to dementia.
- Physical activity types differ greatly and affect brain health in different ways.
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