Navigation Links
Girls, young women can cut risk of early breast cancer through regular exercise
Date:5/13/2008

St. Louis, May 13, 2008 Mothers, heres another reason to encourage your daughters to be physically active: Girls and young women who exercise regularly between the ages of 12 and 35 have a substantially lower risk of breast cancer before menopause compared to those who are less active, new research shows.

In the largest and most detailed analysis to date of the effects of exercise on premenopausal breast cancer, the study of nearly 65,000 women found that those who were physically active had a 23 percent lower risk of breast cancer before menopause. In particular, high levels of physical activity from ages 12 to 22 contributed most strongly to the lower breast cancer risk.

The study, by researchers at Washington University School of Medicine in St. Louis and Harvard University in Boston, will be available online May 13 in the Journal of the National Cancer Institute.

We dont have a lot of prevention strategies for premenopausal breast cancer, but our findings clearly show that physical activity during adolescence and young adulthood can pay off in the long run by reducing a womans risk of early breast cancer, says lead investigator Graham Colditz, M.D., Dr.P.H., the Niess-Gain Professor and associate director of Prevention and Control at the Siteman Cancer Center at Washington University School of Medicine and Barnes-Jewish Hospital. This is just one more reason to encourage young girls and women to exercise regularly.

One-fourth of all breast cancers are diagnosed in women before menopause. Numerous studies have shown that physical activity reduces the risk of postmenopausal breast cancer, but the few studies that have looked at the influence of exercise on breast cancer risk before menopause have produced conflicting results.

For the current analysis, researchers examined data on a subset of women enrolled in the Nurses Health Study II, a prospective study of registered nurses ages 24 to 42. These 64,777 women had filled out detailed annual questionnaires about their levels of physical activity from age 12 on. After six years of follow-up, 550 women had been diagnosed with breast cancer.

The researchers found the age-adjusted incidence rates for invasive breast cancer dropped from 194 cases per 100,000 person-years in the least active women to 136 cases in the most active. The levels of physical activity reported by the most active women were the equivalent of running 3.25 hours a week or walking 13 hours a week. The benefit of exercise was not linked to a particular sport or intensity but related to total activity.

You dont have to be a marathon runner to get the risk-reducing benefits of exercise, Colditz adds.

One leading theory to explain the lower risk of breast cancer among active young women is that exercise reduces their exposure to estrogens. Numerous studies have shown that the more estrogen a woman is exposed to, the greater her risk for breast cancer. Thus, women who begin menstruating later or enter menopause early have a lower risk of breast cancer. And young women who are physically active are more likely to start their periods later and less likely to have regular cycles when they begin their periods.


'/>"/>

Contact: Caroline Arbanas
arbanasc@wustl.edu
314-286-0109
Washington University School of Medicine
Source:Eurekalert

Related medicine news :

1. Air pollution linked to cardiovascular risk indices in healthy young adults
2. Urban Smog Tough on Young Adults Hearts
3. Male deer are born to live fast, die young
4. Bipolar Diagnoses in Younger People Show Huge Increase
5. HealthInsuranceFinders.com Launches Video Contest for Young Directors
6. Nuclear medicine approach can be first choice for excluding pulmonary embolism in young women
7. New HIV diagnoses rising in New York City among young men who have sex with men
8. Especially Yours and Paula Young Team up with Diahann Carroll and Jaclyn Smith in the Fight Against Breast Cancer
9. Office-Based Medical Treatment and Internet Resources Are Potential Solution to Rising Painkiller Misuse Among Teens, Young Adults
10. Young Children Thrive on 30,000 Words a Day
11. Young Twin Cities Boy Shows There is Life After Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/28/2017)... ... 2017 , ... Bacteria and fungi are probably not the first ingredients that come to mind ... right microorganisms in your diet can actually improve health outcomes. And the good news is ... topic of a new peer-reviewed paper led by Maria Marco, Ph.D. , ...
(Date:3/27/2017)... ... March 27, 2017 , ... The respected dental ... want straight teeth without the extensive time commitment and aesthetic disadvantages of traditional ... a referral. A custom-designed series of virtually invisible aligners are created for each ...
(Date:3/27/2017)... Ohio (PRWEB) , ... March 27, 2017 , ... New ... OH to replace their missing teeth can now have them placed by Dr. Manju ... the latest i-CAT® Cone Beam technology to increase the accuracy of each dental implant ...
(Date:3/27/2017)... ... March 27, 2017 , ... ... gain site attention and engagement over the household brands of Top-20 pharma by ... will discuss how partnering with the right outsourcing payments provider can provide the ...
(Date:3/27/2017)... ... March 27, 2017 , ... A study by the founder of the ... Sudeep Roy, MD, was recently published in the American Journal of Cosmetic Surgery. ... Drs. Buckingham and Roy’s study on the use of Electro Lube during the facelift ...
Breaking Medicine News(10 mins):
(Date:3/27/2017)... 2017 To mark the end of Save Your ... leader in digital imaging solutions, will showcase Canon eye care ... New York,s Jacob Javits Center from ... sponsored by the American Optometric Association, is observed annually in ... comprehensive eye exams. In recognition of this observance, Canon ...
(Date:3/27/2017)... -- A new survey from the American Association ... Program (CBP) significantly reduced beneficiary choice and access to ... forces beneficiaries to switch to unfamiliar or unsuitable testing ... AADE,s survey is the latest in a continuous ... the inherent problems with the CBP. Last year, a ...
(Date:3/27/2017)... YORK , March 27, 2017 FinancialBuzz.com ... Based ... adult use in states where cannabis is legal will generate $655 ... million will be from cannabis specific taxes, such as ... $96 million will be earned from state sales taxes that are ...
Breaking Medicine Technology: