Bioidentical Hormones

bioidentical hormones doctor portland oregon


Bioidentical hormones are plant-derived, and are structurally identical to hormones produced by your body. Bioidentical hormone delivery methods and dosages are chosen based on testing and your individual symptoms and specific needs.

There are many types of bioidentical hormones including pharmaceuticals such as patches and gels, as well as compounded options including sustained-release capsules, topical creams or gels, sublingual lozenges, and subcutaneous pellet implants.

Historically, hormone replacement has involved the use of synthetic hormones, especially synthetic estrogen, progestins (e.g., Premarin® and Provera® or PremPro®) and testosterone (methyltestosterone in Estratest®). These synthetic hormones have been shown to increase the risk for health problems including breast cancer, heart disease, stroke, and liver problems.

Bioidentical hormones are prescribed in individualized dosages (based on clinical symptoms and lab results). Because bioidentical hormones are identical in structure as those hormones produced by the human body, they are safer and more effective than synthetic hormones (this is especially true for bioidentical progesterone and testosterone).

More information about bioidentical hormone options, benefits, risks, and research can be found here.

Do women and men need bioidentical hormone replacement therapy (BHRT) for life?

Humans are a unique species when it comes to the fact that we live much of our lives outside our reproductive years. Most animals in the wild do not live beyond their ability to reproduce – many don’t even live beyond puberty. Our increased life expectancy is relatively recent – only women and men in the past couple of generations have a life expectancy beyond 50 years. There is certainly much controversy about whether or not it’s appropriate to restore hormones to youthful levels as people age.

There are two main perspectives when it comes to bioidentical hormone replacement therapy or 'BHRT': use the lowest dosage for the shortest time possible only to treat symptoms, or use individualized dosages for longer periods of time to maintain youthfulness and prevent diseases of aging. Both perspectives require proper evaluation of your specific risks, as well as appropriate follow-up.

Dr. Retzler believes it is your choice whether or not to replace deficient hormones, and supports you in becoming informed about risks, benefits, and treatment options. As a HormoneSynergy patient, yearly lab tests and office visits are required to review your current health, BHRT prescription, and new research that may impact your treatment.


*We are a holistic longevity medical practice specializing in Bioidentical Hormones, Age Management and Functional Medicine. Our mission is to prevent, slow, and treat age and lifestyle-related disease. We only prescribe hormones within the context of a comprehensive treatment plan with the goal of helping you achieve optimal health and well being. We do not prescribe hormones to anyone with a history of illegal steroid use, bodybuilders, or anyone looking for isolated improvements in sports performance. No medications or hormones will ever be dispensed by HormoneSynergy Clinic LLC or Dr. Retzler without an in office consultation, comprehensive medical evaluation, laboratory testing, a prescription, and proper follow up protocols. Our clinic does not prescribe growth hormone. Dr. Retzler does not participate with any insurance providers, accept any insurance reimbursement, or make any profit from lab testing.

The information provided on this website is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her physician. Please seek advice from a medical professional to help evaluate your symptoms and condition for proper diagnosis.