Most breast cancers are found in women 50 or older, but about 9,000 women under 40 are diagnosed with breast cancer each year in the United States.
Right now, scientists are aware of two genes that influence the risk for breast and ovarian cancer. A mutation in either BRCA1 or BRCA2 increases your risk of those cancers.
Expensive tests, not always covered by insurance, can tell whether you have those mutations. But now a new online tool can help you assess your risk so that you and your doctor can decide whether you need to be tested.
Go to Know : BRCA to assess your risk.