Breast cancer is a cancer of the breast tissue. Worldwide, it is the most common form of cancer in females - affecting, at some time in their lives, approximately one out of thirty-nine to one out of three women who reach age ninety in the Western world. It is the second most fatal cancer in women (after lung cancer), and the number of cases has significantly increased since the 1970s, a phenomenon partly blamed on modern lifestyles in the Western world. Because the breast is composed of identical tissues in males and females, breast cancer also occurs in males, and as statistics show, it is on a massive increase, hence the mass TV promotions aimed at men at present.According to wikipedia.org.
So what I do to prevent Breast Cancer is that every month when I have my period, I check my Breast if there is any suspicious lumps that hearts when I touch it.