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Risk of Breast Cancer Reduces With Vigorous Exercise in Africa

 "People often want to know what they can do to reduce their risk of disease, and we have found that just two or more hours of vigorous activity per week can made a difference in one's risk of developing breast cancer," said the lead researcher Vanessa Sheppard, Ph.D., a cancer control scientist and assistant professor in the department of oncology at the Lombardi Comprehensive Cancer Center.

In this study, more than two hours of aerobics, running or similar activity over the span of a week counted as vigorous activity.

"We also know from other studies that being physically active can have benefits in other diseases that occur at high rates in African-American women, such as diabete and hypertension," Sheppard said. "Four out of five African-American women are either overweight or obese, and disease control is a particularly important issue for them."

Evidence showing exercise reduces breast cancer risk has been inconsistent, and there are few that look specifically at African-American women, Sheppard said. The issue is important, she added, because breast cancer has some important differences in this community. Whereas more white women are diagnosed with breast cancer, African-American women have a higher risk of developing premenopausal breast cancer than white women do, and comparatively more African-American women develop the most aggressive form of the disease, known as triple-negative breast cancer.

 

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