Exercse Raises ‘Good’ Estrogen, Lowers Risk of Breast Cancer

A randomized, interventional physical activity study in 381 premenopausal women strongly suggests that exercise changes the way the body breaks down estrogen. Sedentary, young women who experienced regular, intense physical activity for 30 minutes per day for 16 weeks produced more of the 'good' metabolites of estrogen that lower breast cancer risk, compared to the sedentary…

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