300 minutes per week of moderate exercise can help prevent cancer

To begin calculating the PAF of cancer resulting from inactivity, scientists at the American Cancer Society first extracted anonymized da...


To begin calculating the PAF of cancer resulting from inactivity, scientists at the American Cancer Society first extracted anonymized data from the US Cancer Statistics database on cases, nationally and by state. , for all Americans aged 20 and over between 2013 and 2016. The team focused on both the total number of cancer cases and seven types of cancer that, in previous studies, were closely related in part to activity (or inactivity), namely tumors of the stomach, kidneys, esophagus, colon, bladder, breast and endometrium.

Next, they checked how many American adults claim to be moving, based on more than half a million responses to two major federal surveys. Both ask people how and how often they exercise. The researchers drew responses from adults in each state and grouped them together, depending on whether or not people met the American Cancer Society’s recommendations for physical activity. Those the directives require, ideally, 300 minutes, or five hours, of moderate exercise, such as a brisk walk, each week to reduce the risk of cancer.

Finally, the researchers adjusted these statistics for body mass and other factors, gathered additional data on cancer risks, and incorporated all the numbers into an equation, which then spat out the PAF for the related cancers. to inactivity. That number turned out to be 46,356, or about 3 percent of all cancers per year (excluding skin cancers other than melanoma).

When they next looked at the different types of cancer, stomach cancer was most related to inactivity, with about 17% of all annual cases attributable to immobility, compared to 4% of bladder cancers. . Likewise, the numbers varied from state to state, reaching nearly 4% of cancers in many southern states, where residents tend to report relatively little exercise, but around 2% in a large number of states. part of the western mountains, which has relatively active populations.

The good news, however, is that these numbers are malleable. We have the ability to lower them. Exercise could “potentially prevent many cancers in the United States,” said Adair K. Minihan, an associate researcher with the American Cancer Society, who led the new study. If everyone in America who can exercise started walking for an hour on a weekday, she said, theoretically the 46,356 inactivity-related cases should be gone.

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Newsrust - US Top News: 300 minutes per week of moderate exercise can help prevent cancer
300 minutes per week of moderate exercise can help prevent cancer
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