Welcome to the podcast with Dr. Brendan McCarthy! Hormones can stimulate some breast cancer cells to grow. Hormone therapy works by either lowering the amount of hormones in the body or by blocking them from getting to breast cancer cells. Hormone therapy is also known as endocrine therapy. There are a number of different types of hormone therapy. The type you need depends on a number of factors. Let's talk about them

Dr. Brendan McCarthy founded Protea Medical Center in 2002. While he’s been the chief medical officer, Protea has grown and evolved into a dynamic medical center serving the Valley and Central Arizona. A nationally recognized as an expert in hormone replacement therapy, Dr McCarthy s the only instructor in the nation who teaches BioHRT on live patients. Physicians travel to Arizona to take his course and integrate it into their own practices. Besides hormone replacement therapy, Dr. McCarthy has spoken nationally and locally before physicians on topics such as weight loss, infertility, nutritional therapy and more.

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https://www.amazon.com/Jump-Off-Mood-Swing-Hormones/dp/0999649604

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Some of the studies I used:

Franke, Henk R., and Istvan Vermes. "Differential effects of progestogens on breast cancer cell lines." Maturitas 46 (2003): 55-58.

Wood, Charles E., et al. "Effects of estradiol with micronized progesterone or medroxyprogesterone acetate on risk markers for breast cancer in postmenopausal monkeys." Breast cancer research and treatment 101 (2007): 125-134.

Regidor, P-A. "Progesterone in peri-and postmenopause: a review." Geburtshilfe und Frauenheilkunde 74.11 (2014): 995-1002.

Korenman, Stanley G. "The endocrinology of breast cancer." Cancer 46.S4 (1980): 874-878. Korenman, StanleyG. "Oestrogen window hypothesis of the aetiology of breast cancer." The Lancet 315.8170 (1980): 700-701.

Chang, King-Jen, et al. "Influences of percutaneous administration of estradiol and progesterone on human breast epithelial cell cycle in vivo." Fertility and sterility 63.4 (1995): 785-791.

Laidlaw, I. J., et al. "The proliferation of normal human breast tissue implanted into athymic nude mice is stimulated by estrogen but not progesterone." Endocrinology 136.1 (1995): 164-171.

Jean-Michel Foidart, M. D., et al. "Estradiol and progesterone regulate the proliferation of human breast epithelial cells." Fertility and Sterility 69.5 (1998): 963-969.