Structural differences exist between human, synthetic and animal hormones. In order for a replacement hormone to fully replicate the function of hormones which were originally naturally produced and present in the human body, the chemical structure must exactly match the original. There are significant differences between hormones that are natural to humans and synthetic or horse preparations. Side chains can be added to a naturally-occurring hormone to create a synthetic drug that can be patented by a manufacturer.
Natural hormones include estrogens, progesterone, testosterone, dehydroepiandrosterone (DHEA), and natural thyroid hormones. Natural hormone therapy has been prescribed in Europe since the 1950s and have been widely used in North America since the 1990s. Our compounding pharmacists work with patients and practitioners to provide customized hormone therapy with the needed hormones in the most appropriate strength and dosage form to meet each woman’s specific needs. Hormone therapy should be initiated carefully after a woman’s medical and family history has been reviewed. Every woman is unique and will respond to therapy in her own way. Close monitoring and adjustments are essential.
RETHINKING HORMONE REPLACEMENT
The North American Menopause Society (NAMS) released its 2017 Hormone Therapy Position Statement, which has been endorsed by 52 agencies including the American Association of Clinical Endocrinologists, the American Women’s Medical Association, and the Society of Obstetricians and Gynaecologists of Canada, and supported as an educational tool by the American College of Obstetricians and Gynecologists (ACOG). To quote the statement: “Hormone therapy (HT) remains the most effective treatment for vasomotor symptoms (VMS) and the genitourinary syndrome of menopause (GSM) and has been shown to prevent bone loss and fracture. The risks of HT differ depending on type, dose, duration of use, route of administration, timing of initiation, and whether a progestogen is used. Treatment should be individualized to identify the most appropriate HT type, dose, formulation, route of administration, and duration of use, using the best available evidence to maximize benefits and minimize risks, with periodic reevaluation of the benefits and risks of continuing or discontinuing HT. For women aged younger than 60 years or who are within 10 years of menopause onset and have no contraindications, the benefit-risk ratio is most favorable for treatment of bothersome VMS and for those at elevated risk for bone loss or fracture. For women who initiate HT more than 10 or 20 years from menopause onset or are aged 60 years or older, the benefit-risk ratio appears less favorable because of the greater absolute risks of coronary heart disease, stroke, venous thromboembolism, and dementia. Longer durations of therapy should be for documented indications such as persistent VMS or bone loss, with shared decision making and periodic reevaluation. For bothersome GSM symptoms not relieved with over-the-counter therapies and without indications for use of systemic HT, low-dose vaginal estrogen therapy or other therapies are recommended.”
Menopause. 2017 Jul;24(7):728-753.
The 2017 hormone therapy position statement of The North American Menopause Society.
Click here to access the PubMed abstract of this article.
The mortality toll of estrogen avoidance: an analysis of excess deaths among hysterectomized women aged 50 to 59 years.
Findings from the Women’s Health Initiative (WHI) published in 2002 indicated a greater risk of breast cancer and coronary heart disease among women who used a combination of estrogen and progestin as menopausal hormone replacement therapy. In the WHI study arm that investigated the use of estrogen alone (no progestin in women who had hysterectomies), there was a decrease in the risk of breast cancer and heart disease, and a lower rate of mortality in comparison with women who received a placebo.
The backlash from widely publicized findings frightened many women and some physicians, and the use of hormone replacement therapy precipitously declined. Sarrel et al. of the Yale University School of Medicine, Yale University School of Public Health and University of Florence (Italy) Department of Public Health examined the effect of estrogen avoidance on mortality rates. They derived a formula to relate the excess mortality among hysterectomized women aged 50 to 59 years assigned to placebo in the WHI randomized controlled trial to the entire population of comparable women in the United States, incorporating the decline in estrogen use observed between 2002 and 2011. They calculated that a minimum of 18,601 and as many as 91,610 postmenopausal women died prematurely because of the avoidance of estrogen therapy. “Sadly, the media, women, and health care providers did not appreciate the difference between the two kinds of hormone therapy,” commented lead researcher Philip Sarrel, MD. “As a result, the use of all forms of FDA-approved menopausal hormone therapy declined precipitously.” He concluded that informed discussion between the women and their health care providers about the effects of hormone therapy is a matter of considerable urgency. “Essentially, estradiol inhibits the development of atherosclerosis and helps maintain normal arterial blood flow.”
Am J Public Health. 2013 Sep;103(9):1583-8
Click here to access the PubMed abstract of this article.
In September, 2017, Manson et al. published an observational follow-up of approximately 98% of the 27,347 postmenopausal women aged 50-79 who were enrolled in two WHI randomized clinical trials between 1993 and 1998 and followed up through 2014. They concluded that among postmenopausal women, hormone therapy with estrogen plus progestin for a median of 5.6 years or with estrogen alone for a median of 7.2 years was not associated with risk of all-cause, cardiovascular, or cancer mortality during a cumulative follow-up of 18 years.
JAMA. 2017 Sep 12;318(10):927-938.
Menopausal Hormone Therapy and Long-term All-Cause and Cause-Specific Mortality: The Women’s Health Initiative Randomized Trials.
Click here to access the PubMed abstract of this article.
Arefa Cassoobhoy, MD, MPH, a senior medical correspondent for Medscape, interviewed JoAnn Manson, MD, professor of medicine at Harvard Medical School and Brigham and Women’s Hospital in Boston, and lead author of the WHI. Dr. Manson shared the following perspectives:
NAMS’ New Hormone Therapy Position Statement: Clinical Takeaways
//www.medscape.com/viewarticle/88408
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