• Have a baby

Hey, it's your life. All we're saying, or rather, all science is saying, is that as far as breast cancer goes, having a baby lowers your risk. Furthermore, it's better to procreate sooner than later. "Women who have children at a younger age are at a decreased risk," says Kala Visvanathan, MD, a medical oncologist at Johns Hopkins Medical Center. Not only that, breastfeeding lowers your breast cancer risk as well.

• Cut back on the cosmos

Experts have linked alcohol consumption to an increase in breast cancer risk. A study from the British Journal of Cancer shows a 7 percent hike for every drink per day. So try not to let happy hour get too happy.