Why Aging Is Not a Fat Problem — A Muscle-Centric Approach to Longevity

Why Aging Is Not a Fat Problem — A Muscle-Centric Approach to Longevity

Author: Dr. Kara Fitzgerald January 20, 2026 Duration: 56:23
What if obesity and metabolic dysfunction start in the muscle, not the fat tissue we usually measure? In this episode of New Frontiers in Functional Medicine, Dr. Kara Fitzgerald and Dr. Gabrielle Lyon unpack this emerging science, from intramuscular adipose tissue to protein needs, anabolic resistance, fatty liver disease, and the role of muscle in healthy aging. A compelling episode with immediate takeaways for clinical practice.

Check out the show notes at https://www.drkarafitzgerald.com/fxmed-podcast/ for the full list of links and resources.

GUEST DETAILS Dr. Gabrielle Lyon is the physician behind Muscle-Centric Medicine®, a groundbreaking approach that reframes muscle as the key driver of metabolic health, aging, and resilience. She is the bestselling author of FOREVER STRONG and the forthcoming Forever Strong Playbook, which translates her science-backed principles into practical strategies for building lifelong strength and capacity.

Website: https://drgabriellelyon.com/ Instagram: https://www.instagram.com/drgabriellelyon/ YouTube: https://www.youtube.com/@DrGabrielleLyon

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In each episode of Dr. Kara Fitzgerald | New Frontiers in Functional Medicine, Longevity, Epigenetics, host Dr. Kara Fitzgerald sits down with leading researchers and clinicians to explore the intricate science that is reshaping our approach to health. These conversations move beyond surface-level advice, digging into the mechanisms of epigenetics and the practical strategies for extending healthspan. You’ll hear detailed discussions on emerging research, with a focus on how our environment and choices influence genetic expression over a lifetime. This podcast is designed for anyone curious about the actionable science behind longevity, from healthcare practitioners seeking clinical insights to informed patients ready to engage deeply with their own wellness. The dialogue is grounded in functional medicine principles, translating complex studies into meaningful information that can be applied both in clinical settings and daily life. Dr. Fitzgerald guides these explorations with a clear and thoughtful perspective, ensuring each episode builds a comprehensive understanding of how modern science is personalizing the path to lasting health. Tune in for a nuanced and evidence-based journey to the forefront of medicine.
Author: Language: English Episodes: 100

Dr. Kara Fitzgerald | New Frontiers in Functional Medicine, Longevity, Epigenetics
Podcast Episodes
Guide to Building a Sustainable Concierge Longevity Practice [not-audio_url] [/not-audio_url]

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Have you ever struggled to understand why some patients just don’t respond as expected, even when you’re following all the usual gut protocols? In this episode, I sat down with Dr. Tom Fabian, who breaks down the latest…
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Duration: 55:16
Can functional medicine unlock the secrets to healthy aging? In this special preview of the Functional Medicine is Longevity Medicine™ Masterclass happening on September 17- September 19, 2025, Dr. Kara Fitzgerald sits d…
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Duration: 1:22:19
It was a pleasure to sit down with Dr. Nir Barzilai for a conversation that turned out to be both lively and thought-provoking. His decades of research on centenarians, biological age, and the hallmarks of aging have sha…
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Duration: 1:11:26
This episode is a little different from what we usually cover on New Frontiers, but it’s one I couldn’t wait to bring to you. I’ve been thinking a lot about how we—as clinicians—are supposed to keep up in this era of hig…