Breastfeeding mothers reduced risk of breast cancer

By | April 4, 2012

Risk of breast cancer breast-feeding mothers: a new study reports that more than six months postpartum women who breast-feeding some types of breast cancer significantly reduced the risk, it can be said is rare.
Results were published in the famous "cancer" magazine "Daily Progress" online edition.
Lactating mothers suffering from breast cancer risk: researchers, including Amanda. Phillips, he was the Master of Public Health, Seattle Fred Hutchinson Cancer Institute researchers. Survey data from two large-scale survey of breast cancer, these two surveys a total of nearly 2,500 participants, aged 55-79 years of age, come from the Washington area, of which 1140 are breast cancer patients.
All participants are required to complete a questionnaire, including breast-feeding history, age at menarche, age of productive age and menopause.
Phillips and his colleagues analyzed with any of the following types of female breast cancer data:
(1) estrogen-sensitive breast cancer (accounting for the majority of the number of breast cancer.)
(2) HER2-positive breast cancer (high expression of HER2 protein in breast cancer.)
(3) "triple negative" breast cancer, that is not sensitive to estrogen and progesterone, but not the expression of HER2 protein in breast cancer.
This study found that breast-feeding at least 6 months post-partum women who "triple negative" breast cancer the probability of the smallest. 6 months postpartum lactating women over the chances of suffering from this type of cancer than those who do not breast-feeding postpartum women less than half full.
The same data show that not breastfeeding and postpartum women compared to 6 months postpartum lactating women suffering from estrogen-sensitive breast cancer, small probability of 20%.
Breast-feeding mothers with breast cancer risk: The Why is there such a result is unclear. Study did not provide sufficient evidence that post-natal breast-feeding can prevent breast cancer, not breast-feeding or post-natal incidence of breast cancer will increase. Statistically, observational studies, such as this study is not proof of causation. However, Phillips pointed out, other observational studies also found lower breast-feeding and breast cancer incidence between the two negatively correlated.
The study also found that the correlation between the other:
(1) early menarche before the age of 13 —- menstrual cramps the first time – only with HER2-positive type of increase in the incidence of breast cancer related.
(2) -55 years later, after never after menopause – only with estrogen-sensitive breast cancer incidence increased correlation.
Risk of breast cancer breast-feeding mothers Phillips and his colleagues also looked at other factors, including education level, smoking, alcohol, to breast cancer family history. Phillips also noted that because the risk of participating in this "triple negative" breast cancer and the number of HER2-positive type of breast cancer than less, I would like to draw from this study both types of tumor development trends difficult. Phillips, the team concluded that "some reproductive factors on the influenced certain types of breast cancer, requires further study."

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