Breast cancer risk lower, weight loss safer with high activity levels, say researchers: NewsTarget.com

A report from the Mayo Clinic College revealed that a study begun in 2003 found those with the highest physical activity levels had a 14 percent lower risk of developing breast cancer than those who got low levels of exercise. The study looked at more than 36,000 women aged 55 to 69.

The connection between exercise and reduced body fat is not 100 percent clear at this time, as the major source of estrogen in post-menopausal women may also be playing a role, according to the study.

Another unrelated study published in the same journal stated that people who slim down by cutting calories may also be losing bone density -- something that does not happen if weight loss comes through exercise. The study -- carried out by doctors from the Washington School of Medicine -- looked at 48 adults involved variously in weight loss by caloric restrictions or exercise.

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Higher activity levels mean lower risk of breast cancer, safer weight loss, say researchers

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