Posts Tagged ‘frequency’

Are Mammograms Necessary Yearly?

Wednesday, February 13th, 2013

logo1267406_mdA new study appearing online in the Journal of the National Cancer Institute concluded that getting a mammogram every two years was just as beneficial as getting one annually, and led to significantly fewer false positive results.  The researchers said “Screening every other year, as opposed to every year, does not increase the probability of late-stage breast cancer in older women. Moreover, the presence of other illnesses such as diabetes or heart disease made no difference in the ration of benefit to harm.”

Data was collected on 2,993 older women with breast cancer and 137,949 women without breast cancer between 1999 and 2006 which was the largest available screening mammogram data set in the United States. Researchers found no difference in rates of late-stage breast cancer between women screened annually and women screened biennially.  However, they did find that 48% of the women between age 66 and 74 who were screened yearly had false positive results compared to 29% in the group who were screened every two years. They concluded that  “Women aged 66 to 74 who choose to undergo screening mammography shoud be screened every two years. They get no added benefit from annual screening, and face almost twice the false positive and biopsy recommendations , which can cause anxiety and inconvenience. “

Further Research on Exercise and Breast Cancer Risk.

Wednesday, July 4th, 2012

Recent research published in early online Cancer concluded that mild or intense  exercise and  either before or after menopause may reduce the risk of breast cancer. However, substantial weight gain many negate these results. This information adds to the existing information on exercise and breast cancer by elaborating on such questions as duration, frequency, and intensity and the influence of body type.

The study included 1,504 women with breast cancer (233 noninvasive and 1,271 invasive) and 1,555 women women without breast cancer who acted as controls. All were between age 20 and 98 years of age.

Results showed that women who exercised during reproductive or postmenopausal years had a reduced risk of developing breast cancer with those exercising 10 to 19 hours a week experiencing the greatest benefit of about 30% reduced risk. Exercise at all levels of intensity reduced the risk of breast cancer and seemed to preferentially reduce the risk of hormone receptor positive breast cancer (ER or PR positive) that is the most common type of breast cancer among American women.  When researchers looked at the joint effects of phy6sical activity, weight gain, and body size, they found that women who were active but who gained a significant amount of weight, especially after menopause, had an increased risk of developing breast cancer indicating that weight gain eliminates the beneficial effect of exercise on breast cancer risk.