Exercise lowers risk of Breast Cancer.

excerciseA healthy life style contributes to a lower rate of . Research published by the American Cancer Society confirms that exercise, even moderate exercise, lowers the risk of .

The study group consisted of a large group of , approximately 73,615 women who took part in a study begun by the American Cancer Society in 1992 called the CPS-II nutritional cohort study. During the seventeen year study 4,760 women were diagnosed with and the researchers specifically investigated status and levels of exercise.

The rate of decreased with the rate of exercise. The most active women had a 25% lower risk of .

“Our results clearly support an association between physical activity and postmenopausal , with more vigorous activity having a stronger effect,” said Alpa Patel, PhD, leader of the study and American Cancer Society strategic director of Study-3. “Our findings are particularly relevant, as people struggle with conflicting information about how much activity they need to stay healthy. Without any other recreational physical activities, walking on average of at least one hour per day was associated with a modestly lower risk of . More strenuous and longer activities lowered the risk even more.”

The findings were independent from weight and women also benefited whether or not they were taking menopausal hormone therapy. Exercise reduced the risk of both estrogen receptor positive and estrogen receptor negative cancers. (In estrogen receptor-positive , the female hormone estrogen promotes the growth of the cancer. Hormone therapy for works by blocking the effects of estrogen or lowering estrogen levels. Estrogen receptor-negative is often harder to treat because it is not likely to respond to hormone therapy.)

Source

Hildebrand JS, Gapstur SM, Campbell PT, Gaudet MM, Patel AV. Recreational physical activity and leisure-time sitting in relation to postmenopausal risk. , Biomarkers, and Prevention, October 2013

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