Discover Dr. Kathryn Retzler’s clinically guided longevity supplement protocol supporting detoxification, immune resilience, joint integrity, gut health, and vascular performance for optimized aging and whole-body vitality.

Is there lead in protein powders and shakes?

Recent reports show lead in retail protein powders. Discover why RetzlerRx®, Designs for Health, Xymogen and Metagenics® proteins stand apart—tested for heavy metals and physician-approved.

Unlock the power of precision health with DEXA and SECA BIA at HormoneSynergy® Clinic. Our advanced body composition testing goes beyond the scale, measuring fat, muscle, bone density, and visceral fat to design personalized weight loss and longevity strategies for Portland and Lake Oswego patients who want lasting results and optimal health.

Your gut and immune system are deeply connected. RetzlerRx® Intest-Immune DF Plus harnesses advanced nutrition science—featuring hyperimmune egg and prebiotic fiber—to promote balance, defense, and vitality from within.

Emerging research shows that a specific gut microbe, Akkermansia muciniphila, plays a powerful role in metabolic health and long-term weight stability. Learn how supporting this microbe may help optimize your weight, blood sugar, and cardiovascular wellness.*

Discover how Cleerly® AI at HormoneSynergy® Clinic is transforming preventive cardiology for patients in Portland, Lake Oswego, Washington, and Oregon. Using advanced AI-powered cardiac imaging, we detect hidden plaque, assess heart disease risk early, and create personalized prevention plans—helping you protect your heart and extend your healthspan with precision medicine.

Liposomal glutathione is often superior to S-Acetyl Glutathione due to its advanced liposomal delivery system, improved bioavailability, and cellular protection—making it the top choice for patients seeking maximum antioxidant and detox support nationwide.

Weight Loss for Longevity™ is Dr. Kathryn Retzler’s comprehensive medical approach to sustainable fat loss and improved healthspan. Combining GLP-1 medications with gut health, hormone optimization, mindful eating, and accountability, this HormoneSynergy® program helps patients lose fat safely, preserve muscle, and live longer, healthier lives—available at our Portland / Lake Oswego clinic.

When a 2024 ice storm destroyed our home, the experience revealed hard truths about systems failure — and powerful parallels to proactive health, resilience, and longevity medicine.

Your gut health affects everything from immunity to hormone balance. Learn how RetzlerRx® Leaky Gut Support from HormoneSynergy® helps strengthen your intestinal lining, reduce inflammation, and promote longevity — right here in Portland and Lake Oswego.

Creatine isn’t just for athletes — it’s one of the most researched nutrients for maintaining strength, cognition, and cellular energy as we age. HormoneSynergy® and Dr. Kathryn Retzler recommend Creatine Monohydrate as part of a comprehensive Longevity Medicine approach to support muscle mass, brain health, and vitality.