Meet Dr. Kathryn Retzler – Founder of HormoneSynergy® Clinic

Dr. Kathryn Retzler is the founder and sole owner of HormoneSynergy® LLC. She has dedicated her life to helping people achieve vibrant health, optimal aging, and longevity. Her mission is to inspire patients to prevent premature aging, improve brain health, and live with energy and purpose.

Dr. Retzler believes that aging does not have to mean decline. With each passing year, she strives for higher standards of physical, mental, and spiritual health—and she holds the same vision for her patients.

A Mission Rooted in Science, Compassion & Purpose

• Purpose: To inspire people to achieve optimal health and longevity through science-based medicine, education, and personalized care.

• Philosophy: Aging well requires a proactive approach—combining advanced diagnostics, balanced hormones, preventive cardiology, and lifestyle medicine.

• Tools: Knowledge sharing, authentic leadership, evidence-based therapies, and continual professional growth.

“I believe every person has a unique path to vibrant health and the potential for optimal aging and cognitive wellness.” – Dr. Retzler

Education & Advanced Training

• Doctorate in Naturopathic Medicine (2001), National College of Naturopathic Medicine, Portland, Oregon

• Internship in Integrative Medicine with Dr. Andrew Weil, MD

• Residency in McMinnville, Oregon

• Fellowships in Preventive Cardiology under Mark Houston, MD, through the American Academy of Anti-Aging Medicine

• Ongoing education: Regular lecturer and teacher at Age Management Medicine Group (AMMG) and at international conferences

Her mentors include Dr. Rebecca Glaser, Dr. Thierry Hertoghe, Dr. Daniel Amen, and Dr. Dale Bredesen (Bredesen Protocol™).

Expertise & Clinical Focus

• Bioidentical Hormone Replacement Therapy (BHRT) for men and women

• Preventive Cardiology and Longevity Medicine

• Functional Medicine & Lifestyle Optimization

• Brain Health & Cognitive Function Support

• Age Management Medicine Consulting & Training for Physicians

Dr. Retzler integrates natural, evidence-based therapies with bioidentical hormones and, when appropriate, pharmaceuticals to address root causes of health issues, hormone imbalances, and changes associated with aging.

Leadership & Teaching

Dr. Retzler speaks regularly at national and international conferences on topics like age management medicine, hormone health, and brain health optimization. She also trains physicians in:

• Age Management Medicine

• Preventive Cardiology

• Bioidentical Hormone Replacement Therapy (BHRT)

• Weight Loss for Longevity™

• Women and Aging

Serving Patients in Oregon, Washington & Beyond

Dr. Retzler holds full prescribing authority in Oregon and Washington. She serves patients throughout the United States, offering:

• Individual health optimization consultations

• Training for medical professionals in preventive cardiology, age management, and BHRT protocols

A Vision for Optimal Aging

Through the HormoneSynergy® Clinic, Dr. Retzler uses advanced diagnostics, functional medicine principles, and personalized care plans to help patients:

• Prevent disease before it starts

• Enhance cognitive function and brain health

• Restore energy, balance, and vitality

• Age with purpose and longevity