A study published in JAMA Open Network found that  “favorable” lifestyle was associated with a reduced risk of breast cancer even among women at high genetic risk for the disease in a study of more than 90,000 women, researchers reported.

The findings suggest that, regardless of genetic risk, women may be able to reduce their risk of developing breast cancer by getting adequate levels of exercise; maintaining a healthy weight; and limiting or eliminating use of alcohol, oral contraceptives, and hormone replacement therapy.

Kawthar Al Ajmi, MSc, of the University of Manchester (England), and colleagues published these findings in JAMA Network Open.

With almost a quarter of breast cancers thought to be preventable in the United Kingdom, “it is important to understand the contribution of modifiable risk factors … and how they affect or add to the inherited genetic factors,” the researchers wrote.