What are the odds of getting breast cancer? Overall, the average risk of a woman in the United States developing breast cancer sometime in her life is about 13%. This means there is a 1 in 8 chance she will develop breast cancer. This also means there is a 7 in 8 chance she will never have the disease.
What percentage of the population has breast cancer? About 1 in 8 U.S. women (about 13%) will develop invasive breast cancer over the course of her lifetime.
Who is most likely to suffer from breast cancer? Most breast cancers are found in women who are 50 years old or older. Some women will get breast cancer even without any other risk factors that they know of. Having a risk factor does not mean you will get the disease, and not all risk factors have the same effect.
Why is breast cancer very common? Breast cancer is common in the United States and other developed countries, with one in eight women being diagnosed during their lifetime. The most common breast cancer risk factors are related to estrogen exposure over the course of our lifetime. A Western lifestyle increases these risk factors.