A new study sheds light on one potential health benefit of exercise: a lower risk of certain cancers.
, analyzed data from more than 750,000 adults in the United States, Europe and Australia, and found that recommended amounts of physical activity correlated with lower risks of seven types of cancer, of the 15 types that researchers looked at.A number of previous studies have come to similar conclusions about physical activity and cancer. In the latest analysis, the researchers dug deeper into the relationships between the amount of physical activity and how much lower the cancer risk became.
With some cancers, most of that reduced risk was seen with the recommended amounts of physical activity. With other cancers, the study found that physical activity well above current recommendations may correlate with the lowest risk levels. The authors note their data come from self-reported physical activity at just one point in time and that the majority of people included were white, which could limit how applicable their findings are more broadly.
The researchers caution that the study doesn't definitively show that exercise directly causes cancer risk to drop. Health experts say there may be various other factors at play.
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