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Reduced breastfeeding in Western countries makes major contribution to incidence.(of breast cancer)

Women's Health Weekly

| August 22, 2002 | COPYRIGHT 2002 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2002 AUG 22 - (NewsRx.com & NewsRx.net) -- Small family size and short-duration or no breastfeeding in Western populations substantially increases the risk of breast cancer, conclude authors of a study in the July 20, 2002, issue of the Lancet.

An estimated 25,000 breast cancers would be prevented in Western populations every year if women continued to have the same number of children but breastfed each child for 6 months longer.

Childbearing is known to protect against breast cancer; however it has been unclear whether breastfeeding contributes to this protective effect. In an international collaborative study, Valerie Beral from the Cancer Research U.K. epidemiology unit, Oxford, U.K., and colleagues pooled and analyzed data from 47 epidemiological studies in 30 countries that included information on breastfeeding patterns and other aspects of childbearing for around 50,000 women with invasive breast cancer and around 97,000 women without breast cancer.

Women with breast cancer had fewer children on average (2.2) than women who did not develop breast cancer (2.6). Twenty-nine percent of mothers who developed breast cancer, compared with 21% of those who did not develop breast cancer, had never breastfed; of those women who did breastfeed their children, women who developed breast cancer had a shorter lifetime duration of breastfeeding (around 10 months) compared with women who did not develop breast cancer (16 months).

The relative risk of breast cancer decreased by 4.3% for ...

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Source: HighBeam Research, Reduced breastfeeding in Western countries makes major contribution...

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