Muscle is the Organ of Longevity.

I work with patients holistically to support this important organ, helping them to realize optimal health and vitality.

Functional Medicine is just the beginning.


Dr. Gabrielle Lyon is uniquely trained in Nutrition & Metabolism, practicing "Muscle-centric Medicine"...

Learn More


From Functional Lab Testing and Nutrition to Body Composition and Optimization.

Book Now

Fern Olivia

Founder of Thyroid Yoga, LA & Costa Rica

Dr. Gabrielle Lyon has been my trusted thyroid doctor and advocate for my health, and beyond that, an incredible mentor, colleague and friend. I am forever grateful for our instant connection in yoga with Elena, and from there, our beautifully aligned collaborations of Thyroid Yoga and Functional Nutrition workshops and day retreats at The Ash Center. She is a dream to partner with and I treasure the knowledge she has brought into my life and how she has taken care of my clients, too. Gabrielle’s wisdom and vast knowledge of comprehensive medicine and metabolic nutrition has been a catalyst for my healing from Hashimoto’s Hypothyroid symptoms, and her work has inspired the nutrition and lifestyle recommendations I suggest to others on similar paths. She has always been there for me through thick and thin, and I highly recommend her work because she actually takes the time to know you, which is rare in the medical field these days. She’s very, very intuitive and her protocols actually work, because she is so attuned in her practice.

Alanna Kaivalya, PH.D.

New York City

Dr. Gabrielle Lyon is a true healer disguised as a medical doctor. She understands how to heal the whole person from the inside out. Without simply looking at test results, she looks at you and treats you as a unique individual. Dr. Lyon thinks outside the box and is not afraid to practice in a holistic, comprehensive way. After struggling for 20 years with Hashimoto’s thyroiditis, I was in such a state of imbalance and ill-health that I forgot what it was like to be normal. Though run-of-the-mill doctors looked at lab results and said I was fine and it was all in my head, Dr. Lyon did not cease to discover the root cause of my disease. Through her diligence, compassion and enthusiasm for healing, she brought me to a state of being that surpasses normal; she gave me my life back. 


New York City

I can honestly say that I would not be where I am right now if it weren’t for Gabrielle. I’m a professional racecar driver, which as you can imagine, is not only physically demanding but mentally demanding as well. In December of last year, I felt so bad and was pretty certain that my career was over. I had no energy and felt like everything I was doing was making me feel worse. I went to so many doctors I lost count and truthfully lost a little faith. Fortunately, Gabrielle was recommended to me and I can’t begin to tell you how grateful I am for her. What is amazing about Gabrielle, is not only is she fantastic at what she does, but she truly cares. She takes the time to find out what’s wrong with you and goes above and beyond. After two weeks of being on the program Gabrielle put me on, I started to see a considerable difference. And to her credit, I went from being in last place to winning the last 3 races fighting for the championship. 


New York City

Nick T.

New York City

Lauren H.

New York City

Alison Marras

NTC @Foodbymars, New York City

Dr. Gabrielle is the most caring, sincere and intelligent doctor I've ever had the pleasure of working with. Unlike many doctors, even functional medicine docs, she has a specialty in nutrition which is invaluable as I'm a huge believer in food as medicine. Her bedside manner should set the bar for all doctors - plain and simple. She spends the full appointment with you, makes you feel comfortable to ask questions and take ownership of your health. I've never felt more confident about getting better with a doctor before. She's a great teacher and has supported me in ways I never knew a doctor could.

Subscribe & Receive a FREE download of The Lyon Protocol

Image of Lyon Protocol

4-week Reset

Learn about the importance of protein intake, proper ratios, and timing in order to support your organ of longevity, the Muscle. Get free delicious protein-rich recipes included for your 4-week Reset.

Featured In

Bazarr Logo
Well & Good Logo
The Thirty Logo
Huff Post Logo
Womens health logo
Popsugar Logo