There is evidence that women with dense breasts are at an increased risk of developing breast cancer, but this risk is not always clearly recognized and understood. Women with dense breasts are typically advised to consider repeat screening mammography every two years starting early in their reproductive years. However, the American College of Obstetricians and Gynecologists (ACOG) also currently recommends that all women over the age of 45 should undergo regular mammograms regardless of their breast density.