Can exercise really reduce the risk of getting cancer?

While it hasn’t been proved that physical activity mitigates your likelihood of getting the disease, the evidence shows a strong link – so get moving

Just in case you haven’t got the message that exercise is good for you, two huge research studies this week shout it louder than ever. Which is just as well, since almost one-third of adults are classified as “inactive”. Exercise is already known to reduce the risk of breast, colon and endometrial cancer (cancer of the lining of the uterus) by between 10% and 40%. Now, a pooled analysis of data from studies looking at 1.4 million adults between the ages of 19 and 98 has found that exercise reduces the risk of an additional 10 cancers, including oesophageal, stomach, bladder and kidney. What’s more, for many cancers, exercise reduces the risk even in overweight people. This is particularly interesting, because the mechanism by which exercise is thought to protect from cancer is weight reduction.

It seems that exercise may work its magic in a variety of ways. Dr Marilie Gammon, an epidemiologist from the Gillings School of Global Public Health in Chapel Hill, North Carolina, who wrote an editorial to accompany the paper in the peer-reviewed journal JAMA Internal Medicine, says that exercise may help to repair DNA when it is damaged by cancer-promoting substances. Exercise may also alter hormone levels and reduce inflammation.

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from Health & wellbeing | The Guardian http://ift.tt/1YQwdXr
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