Previous research indicates that women with the BRCA1 or BRCA2 gene mutations have an elevated risk for developing breast cancer. A pilot study involving 68 BRCA1 or BRCA2 mutation carriers indicates that the incidence of breast cancer is lower among those who regularly exercise and refrain from smoking. The research team recommends a larger scale study to confirm their findings.
Archives of Gynecology and Obstetrics, December 2017