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Breastfeeding for at least six months might lower the risk of infection of developing so-called "triad negative" breast cancer, an aggressive sort of the disease that is more common in black and younger women, according to a study published on Monday in the journal Cancer, the Seattle Post-Intelligencer reports (Paulson, Seattle Post-Intelligencer, 8/24).
Nearly 50% of black women younger than age 55 wHO are diagnosed with white meat cancer have the three-bagger negative type, compared with 22% of white women. The five-year survival rate for triple negative chest cancer is 15% lower than for other types of the disease, in part because the disease responds ailing to most breast cancer treatments (Kaiser Health Disparities Report, 5/30).
To set what puts women at risk for the triad negative type of white meat cancer, lead researcher Amanda Phipps, a scientist in the public health division of the Fred Hutchinson Cancer Research Center, and colleagues studied two groups of women ages 55 to 79. One group was made up of 1,cxl women wHO had several different forms of breast cancer, including the triad negative type, the most common "sodium thiopental" form and another mannequin associated with the HER2 protein. The second grouping was made up of 1,476 women wHO had not been diagnosed with breast cancer.
Researchers took into account the participants' procreative health histories, which would provide indicators of hormone levels over time, such as breastfeeding practices and the onslaught of flow and change of life.
Among other findings, researchers found that breastfeeding for at least six months corresponded with a lour risk of developing the triple-negative signifier of chest cancer and the mutual luminal var.. It is not exactly clear wherefore breastfeeding influenced hormonal cancer risks. Phipps said, "One possible explanation is that while women are breastfeeding, they aren't menstruating and so their hormones aren't cycling," so the yearner women suckle, the less chance their hormones have to develop a cancer. Another theory is that breastfeeding alters the social structure of breast cells in a way that makes them less prone to develop into cancer cells, Phipps aforesaid.
She aforementioned the findings indicate that reproductive behavior "helps explicate why some women ar at higher risk and also why certain therapies are non effective against these more aggressive forms of breast cancer" (Seattle Post-Intelligencer, 8/24).
An abstract of the study is available on-line.
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