Hormone Therapy: Synthetic Progestins Are Not The Same As Progesterone

Huffington Post

by Christiane Northrup

It’s 2002 all over again, and women are being warned against taking hormone replacement because of its link to breast cancer. Why is history repeating itself? Because we haven’t learned an important lesson. Synthetic progestins are not the same as progesterone, and reporting on them as if they confer the same risks and benefits is absurd.

I’m talking about the study in the New England Journal of Medicine dated February 5, 2009, which concludes that hormone therapy doubles the risk of breast cancer. Specifically, women past menopause who take both estrogen and progestin (such as in the form of Prempro) for five years or more have twice the risk of developing breast cancer. When these same women stopped their combination hormone formula, the number of breast cancer incidents dropped by about 28 percent within the first year.

This study is a follow-up to the landmark Women’s Health Initiative that studied more than 15,000 women between the ages of 50 and 79 who were taking HRT. In 2002, the study was stopped when researchers concluded that Prempro caused higher incidents of heart problems and breast cancer. Interestingly, the number of breast cancer cases dropped significantly since 2003.

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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.