Five hours of weekly exercise may help prevent certain cancers

In the newspapers

Many cancers could be prevented if people got at least five hours of moderate-intensity exercise a week, according to a report from October 4, 2021, issue of Medicine and science in sport and exercise.

The researchers looked at the number of cancer cases from 2013 to 2016. Then they calculated the weekly activity of more than 500,000 people using self-reported information from two major national surveys.

When they compared the data, the researchers concluded that 3% of annual cancer cases (about 46,000) could be attributed to physical inactivity, defined as less than five weekly hours (300 minutes) of physical exercise. moderate intensity like brisk walking, bicycling, and water aerobics.

Looking at individual cancers, the researchers found that inactivity was potentially linked to 17% of annual cases of stomach cancer, 11% of kidney cancers, 9.3% of colon cancers and 8% of cancers. of the esophagus.

Possible link? Previous research has shown that regular exercise helps reduce inflammation and improve immune function, factors that may reduce cancer risk.

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