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Physical activity and breast cancer risk: the effect of menopausal status
1Division of Population Health and Information, Alberta Cancer Board, Calgary, Canada. chrisf@cancerboard.ab.ca
Abstract:
Convincing epidemiologic evidence exists that physical activity reduces breast cancer risk. The association may differ by menopausal status, because stronger evidence for a risk reduction exists for postmenopausal than for premenopausal women. This review examines potential reasons for the differences in effect by menopausal status, including possible underlying biologic mechanisms.
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