While the incidence of breast cancer increases with age, there are still many womendiagnosed in their prime reproductive years with 11% of women being 45 years of age or younger. One out of three of these women will have early stage cancer that can be successfully treated (70% survival at 10 years from diagnosis). Many of these women will not have started or completed their families, reflecting the growing tendency of women to delay childbearing until after age 30. Since the 1990s, the number of first time mothers older than age 30 has increased to over 21%.