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health1d ago
Love working out? Dirty air means you won’t get full health benefits
- New analysis shows exercise benefits are reduced in areas with high air pollution, especially for cancer and heart disease.
- Study followed over 1.5 million adults for more than a decade across multiple countries.
- Researchers focused on PM2.5, tiny particles that can affect the heart and lungs.
- Active people living in areas with pollution above 25 μg/m³ saw reduced risk reduction.
- Higher pollution levels above 35 μg/m³ further diminish benefits, affecting about a third of the global population.
- Authors say don’t avoid outdoor activity; check air quality and consider cleaner routes.
- Limitations include most data from wealthy countries; results may differ in lower-income regions.
- Researchers call for global efforts to reduce air pollution to maximize exercise benefits.
- Authors include Paola Zaninotto and Andrew Steptoe of University College London.
- Exercise remains beneficial overall, but air quality can blunt gains.
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