Breast Cancer Risk Increases with Estrogen HRT

Remember the 1970 Senate testimony on the first birth control pills when a male ‘medical expert’ (women were not allowed to testify at this hearing either) said ‘estrogen is to cancer like fertilizer is to wheat.’ 40 years later and women are still at risk for iatrogenic disease from static based hormone therapy.

HRT With Estrogen Added Raises Breast Cancer Risk

Medical News Today
16 Mar 2012 – 9:00 PDT

According to a study published March 15 in the Journal of the National Cancer Institute, thoughts about how estrogen alone or estrogen in addition to progestin influence the risk of developing breast cancer has considerably changed in the past 10 years due to results from the Women’s Health Initiative (WHI) randomized placebo-controlled hormone therapy trials, and from large prospective cohort studies.

At present, concerns are still being raised regarding hormone therapy-induce breast cancer risk, even though the therapy is used for menopausal symptoms by millions of women. Furthermore, researchers are still not clear on the effects of estrogen in addition to progestin vs estrogen alone on breast cancer.

Rowan T. Chlebowski, M.D., Ph.D., of the Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center and Garnet Anderson, Ph.D., at Fred Hutchinson Cancer Research Center, examined data from 2 randomized, placebo-controlled clinical trials carried out in the WHI, in order to examine the effects of estrogen in addition progestin vs estrogen alone on the risk of developing breast cancer.

The first study assessed estrogen alone in post-menopausal women with prior hysterectomy, and the second study assessed estrogen plus progestin in post-menopausal women who had not undergone hysterectomy.

The researchers found that the risk of developing breast cancer was statistically considerably increased by using estrogen in addition to progestin, while the risk was statistically significantly decreased in post-menopausal women with previous hysterectomy who took estrogen alone.

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Author: Leslie Carol Botha

Author, publisher, radio talk show host and internationally recognized expert on women's hormone cycles. Social/political activist on Gardasil the HPV vaccine for adolescent girls. Co-author of "Understanding Your Mood, Mind and Hormone Cycle." Honorary advisory board member for the Foundation for the Study of Cycles and member of the Society for Menstrual Cycle Research.