U.S. Breast Cancer Statistics
- About 1 in 8 women in the United States (12%) will
develop invasive breast cancer over the course of her lifetime.
- In 2010, an estimated 207,090 new cases of invasive
breast cancer were expected to be diagnosed in women in the U.S.,
along with 54,010 new cases of non-invasive breast cancer.
- About 1,970 new cases of invasive breast
cancer were expected to be diagnosed in men in 2010. Less than
1% of all new breast cancer cases occur in men.
- From 1998 to 2007, breast cancer incidence rates
in the U.S. decreased by about 2% per year. One theory is that
this decrease was partially due to the reduced use of hormone replacement
therapy (HRT) by women after the results of a large study called the
Women’s Health Initiative were published in 2002. These results suggested
a connection between HRT and increased breast cancer risk.
- About 39,840 women in the U.S. were expected to
die in 2010 from breast cancer, though death rates have been decreasing
since 1990. 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.
- Besides skin cancer, breast cancer is the most commonly
diagnosed cancer among U.S. women. More than 1 in 4 cancers in women
(about 28%) are breast cancer.
- Compared to African American women, white women are
slightly more likely to develop breast cancer, but less likely to die of
it. One possible reason is that African American women tend to have more
aggressive tumors, although why this is the case is not known. Women of
other ethnic backgrounds — Asian, Hispanic, and Native American — have a
lower risk of developing and dying from breast cancer than white women and
African American women.
- In 2010, there were more than 2.5 million breast
cancer survivors in the U.S.
- 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.
- About 5-10% of breast cancers can be linked to gene
mutations (abnormal changes) inherited from one’s mother or father.
Mutations of the BRCA1 and BRCA2
genes are the most common. Women
with these mutations have up to an 80% risk of developing breast cancer
during their lifetime, and they are more likely to be diagnosed at a
younger age (before menopause). An increased ovarian cancer risk is also
associated with these genetic mutations. In men, about 1 in 10 breast
cancers are believed to be due to BRCA2 mutations and even fewer cases
to BRCA1 mutations.
- About 70-80% of breast cancers occur in women who have
no family history of breast cancer. These occur due to genetic
abnormalities that happen as a result of the aging process and life in
general, rather than inherited mutations.
- The most significant risk factors
for breast cancer are gender (being a woman) and age (growing older).
Following is a look at how breast cancer is affecting women in the United States. The CT Breast Health Initiative sponsors a number of events in support of breast cancer research and education in Connecticut. Please click here for a list of these events.
Breast cancer survivors in the United States now.
Estimated number of new cases of breast cancer that will be diagnosed in women in the united States this year.
Estimated number of women who will die from breast cancer this year.
One large study found that the chance of having a false positive result after 10 mammograms was nearly 50%.
Based on a recent survey, Connecticut women think they have a 40% chance of getting breast cancer some time in their life, reports the State Department of Health. The true lifetime risk is only around 12%. Although breast cancer is the most common cancer diagnosed in women, more women die from lung cancer than from breast cancer.
7 to 18%
Percent of women with early breast cancer who have a local recurrence within 10 years after treatment, on average.
Heart disease kills 8 times more women a year than breast cancer.
The percentage of all breast cancers that occur in women under age 40. Most breast cancers and breast cancer deaths occur in women aged 50 and older.
These statistics were published in the 10/3/2010 edition of the Hartford Courant.