Thursday, October 7, 2010
- About 1 in 8 women in the United States (between 12 and 13%) will develop invasive breast cancer over the course of her lifetime.
- In 2010, an estimated 207,090 new cases of invasive breast cancer are expected to be diagnosed in women in the U.S., along with 54,010 new cases of non-invasive (in situ) breast cancer.
- About 39,840 women in the U.S. are expected to die in 2010 from breast cancer, though death rates have been decreasing since 1991. These decreases are thought to be the result of treatment advances, earlier detection through screening, and increased awareness.
- For women in the U.S., breast cancer death rates are higher than those for any other cancer, besides lung cancer.
- About 70-80% of breast cancers occur in women who have no family history of breast cancer.
- The most significant risk factors for breast cancer are gender (being a woman) and age (growing older).
- A woman’s risk of breast cancer approximately doubles if she has a first-degree relative (mother, sister, daughter) who has been diagnosed with breast cancer. About 20-30% of women diagnosed with breast cancer have a family history of breast cancer.