Statistics show that a woman has a 1 in 8 lifetime chance of developing breast cancer. Breast cancer is the most frequently diagnosed cancer in women in the United States, other than non-melanoma skin cancers. Three-fourths of breast cancer cases are diagnosed in women age 50 and older. And although breast cancer is more common in older women, it does occur in younger women and in men. There are additional factors that may increase a woman’s cancer risk.