Some aspects of a woman's lifestyle may affect her chances of developing breast cancer. For example, some studies point to a slightly higher risk of breast cancer among women who drink alcohol. The risk appears to go up with the amount of alcohol consumed. Scientists are trying to learn whether having an abortion or a miscarriage increases the risk of breast cancer. Thus far, studies have produced conflicting results, and this question is still unresolved.
Some evidence suggests a link between diet and breast cancer.
However, it is not yet known whether a diet low in fat will actually prevent breast cancer. Also, recent studies suggest that regular exercise may decrease the risk of breast cancer in younger women. Research has led to the identification of certain alterations in genes that place women at a greater risk for developing breast cancer. Women with a strong family history of breast cancer may choose to have a blood test to see if they have inherited an alteration in the BRCA1 or BRCA2 gene. Certain alterations in either of these genes increase a woman's chances of developing breast cancer.