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better mental healthreduced risk of heart diseaseand have all the well-known health benefits of a slim waist routine Exercise,
but a new Study Suggests some of the benefits to be derived from being active This can be reduced simply by where you live. The scientists found that people who exercised regularly but were exposed to highly polluted air had the mortality benefits from exercise halved.
Research from University College London and published in journals bmc medicine Analyzed data from more than 1.5 million adults tracked for more than a decade in countries including the UK, Taiwan, China, Denmark and the United States. The exercise habits of adults were tracked along with levels of tiny particles known as PM2.5Which can get trapped in the lungs and enter the bloodstream.
Researchers found that people who got at least two and a half hours of moderate or vigorous exercise per week had a 30 percent lower risk of dying than those who didn’t.
However, if people in this highly physically active group live in an area with high fine particle pollution (above 25 micrograms per cubic meter), this reduction in risk is halved to 12 to 15 percent.
The health benefits of exercise became even weaker for people exposed to areas with high levels of fine particle pollution. The researchers found that for those experiencing levels above 35 micrograms per cubic meter, the benefits of exercise on cancer risk were “no longer strong.”
The team said that almost half (46 percent) of the world’s population lives in areas with more than 25 micrograms of PM2.5 per cubic meter, and almost a third (36 percent) live in areas where annual average PM2.5 levels exceed 35 micrograms per cubic meter.
For study participants in the UK, the average annual PM2.5 level was below these limits, at 10 micrograms per cubic metre. However, the researchers said levels of fine particle pollution “vary greatly”, with “spikes” in pollution in UK cities exceeding 25 micrograms per cubic metre.
The lead researcher, Professor Po-Wen Kuo of National Chung Hsing University in Taiwan, said the findings suggest that exercise is still beneficial in polluted environments, but that improving air quality “could significantly enhance these health benefits”.
The team said the negative effects of air pollution can be reduced “by checking air quality, choosing cleaner routes or reducing intensity on polluted days”.
Co-author Professor Andrew Steptoe, from UCL’s Department of Behavioral Sciences and Health, said: “Our study shows that toxic air can, to some extent, block the benefits of exercise, although not eliminate them. The findings are evidence of the harm that fine particle pollution can cause to our health.
“We believe that both clean air and physical activity are important for healthy aging and so we encourage greater efforts to prevent pollution levels that harm health.”
comes after this a search It was found that even one minute of vigorous exercise per day could reduce your risk of early death by 38 percent. Other research has also shown that gender may impact the benefits of exercise. a study Concluding that men needed about twice as much exercise as women to see the same reduction in heart disease risk.