If you're a teenage girl, you might be worried about your risk of getting breast cancer. Developing breast cancer when you're a teenager is extremely rare. It's also uncommon in women in their 20s and 30s. The vast majority of breast cancers are diagnosed in women over the age of 50.
The older a woman is, the more likely she is to get breast cancer. Rates of breast cancer are low in women under 40. Fewer than 5 percent of women diagnosed with breast cancer in the U.S. are younger than 40 . Rates begin to increase after age 40 and are highest in women over age 70 (see Figure 2.1 below).
However, breast cancer can strike at any age, and all women should be aware of their. Many women assume they are too young to get breast cancer and tend to assume that a. We do not endorse non-Cleveland Clinic products or services.
As with all types of cancer, having a risk factor does not mean you will get breast. at an older age (after age 55) have a slightly higher risk of breast cancer.