We combine advanced genetic insights with functional medicine to uncover the why behind your health challenges — translating complex genomic data into precise, personalised strategies for lasting wellness.

At Functional Genomic Medicine, we combine advanced genetic insights with functional medicine to uncover the why behind your health challenges.
Our personalised approach maps how your genes interact with nutrition, environment, and lifestyle — allowing us to design precise, targeted strategies that restore balance and optimise wellness.
By translating complex genomic data into practical solutions, we help you move beyond symptom management toward lasting, vibrant health.
Two distinguished practitioners united by one mission — to help you reclaim energy, clarity, and resilience through the power of genomic medicine.


From comprehensive genomic testing to targeted support for neurological, immune, and cognitive conditions — every service is designed around your unique genetic blueprint.







FirstStep Medicine uses genomic insight and natural therapies to restore function before pharmaceuticals are ever considered. This is medicine in the correct order — recognised internationally.
Available in-person in Oklahoma City and via telehealth internationally.
Your first consultation is a thorough, one-on-one session with ND. Gwendolyn Posey to review your health history, clarify your goals, and map out a personalised genomic strategy built entirely around you.
Real results from real patients whose lives have been changed by genomic-guided medicine.
"Dr Gwen is who you've been praying for."
Our son was diagnosed as Level 3 autistic. For years, we were handed labels and therapy referrals, but never answers. Working with Dr. Gwen has been nothing short of life-changing. She looked deeper than anyone ever had — into his genomics, his biology, and what his body was truly asking for. He looks physically different. His face is brighter. He's calm, present, and engaged. Our non-verbal son is now expressing his needs more clearly.
"He is excelling and moving up in his classes! So many people comment on how happy he seems. We are so encouraged to know there are doctors who support the healing of children with Autism."
"Dr. Posey is AMAZING! She always knows exactly what to do to help me feel my best! 5 STARS!!!"
Whether you're dealing with chronic illness, seeking preventative care, or want to optimise your health — a $200 genomic consultation is the most powerful first step you can take.
Have more questions? Call us at (405) 905-0854 or book a consultation and we'll answer everything in person.
Get in TouchFunctional Genomic Medicine is a personalised healthcare approach that uses genetic analysis to create customised treatment plans, optimise nutrition, and prevent disease. By understanding how your specific genes interact with your environment and lifestyle, we address root causes — not just symptoms.
Genetic testing reveals your unique biological blueprint — allowing us to tailor treatments, identify early disease risk, and personalise nutritional and lifestyle guidance. Rather than one-size-fits-all care, you receive strategies built entirely around your genetics.
Absolutely. Your genetic information is securely stored and handled with the utmost confidentiality. We are fully HIPAA-compliant and your privacy is protected at every step of your care journey.
The $200 initial consultation fee is a full credit toward your treatment plan if you decide to move forward with care. It covers a thorough one-on-one session reviewing your health history, goals, and outlining your personalised genomic protocol.
Yes. Through our telehealth partnership, FirstStep Medicine and our full genomic care programmes are available to patients internationally — not just in Oklahoma City.
No. FirstStep Medicine is evidence-based, genomic-guided healthcare. It prioritises natural therapies where sufficient and escalates to pharmaceuticals when clinically indicated — always with full biological insight.
Whether you have questions, want to schedule an appointment, or simply seek guidance on your health journey, our dedicated team is here to assist you.