SAN FRANCISCO (KGO) -- A new study found physical activity can lower the risk of certain types of cancer.
The Journal of Clinical Oncology published the study.
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It looked at 750,000 adults from the United States, Europe and Australia.
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Researchers studied 15 of the most common types of cancer, and found physical activity lowered risk of seven of them.
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They are colon, breast, kidney, melanoma, liver, non-hodgkins lymphoma and endometrial cancer.
Researchers say two and a half hours of moderate intensity exercise, and 75 minutes of vigorous exercise per week lowered the risk of cancer.