Dr. Kara Fitzgerald | New Frontiers in Functional Medicine, Longevity, Epigenetics
Dr. Kara Fitzgerald
Welcome to New Frontiers in Functional Medicine, Longevity & Epigenetics™ where I interview the best minds in functional medicine to discuss the science and research behind medicine, longevity, epigenetics, and so much more. Expect thought-provoking ideas, new research, lots of clinical pearls for practitioners, and step-change information for clinicians and patients. Join us! ~DrKF
Copyright © 2025 by KF Education and Consulting, LLC
All Rights Reserved
Copyright © 2025 by KF Education and Consulting, LLC
All Rights Reserved
Episodes
Mentioned books

Jan 6, 2026 • 46min
Platelet-Derived Exosomes in Aesthetics: Data, Safety, and Real-World Use Cases
Exosomes are becoming one of the most talked-about tools in regenerative medicine, but not all exosomes are created equal. In this episode of New Frontiers, Dr. Kara Fitzgerald talks with Alisa Lask, CEO of Plated Skin, about the science behind platelet-derived exosomes and why their signaling pathways matter for repair, renewal, and changes in skin appearance.
We explore how discoveries in cardiology led to this technology, what early clinical studies are showing, and why source and preparation are critical when evaluating any exosome-based approach. A clear, grounded look at a fast-moving field for clinicians who want to understand what’s real, what’s emerging, and what deserves attention next.
Full show notes + references: https://www.drkarafitzgerald.com/fxmed-podcast/
GUEST DETAILS
Alisa Lask is the CEO of Rion Aesthetics, where she is driving innovation in regenerative aesthetics with platelet-derived exosomes and leading research in areas like hair restoration and skin appearance. She also oversees (plated)™ Skin Science, a medical-grade exosome skincare line distributed through aesthetic providers.
Alisa previously held senior roles at Galderma, Allergan, Zimmer-Biomet, and Eli Lilly, and she serves on the Board of Directors for CollPlant. She holds an MBA from the University of Michigan and is also a nationally competitive show-jumping equestrian involved in dog rescue initiatives.
THANKS TO OUR SPONSOR
(plated)™ Skin Science: http://platedskinscience.com/
Plated Skin Science translates the discovery of Dr. Atta Behfar, M.D., Ph.D., Director of Mayo Clinic’s Van Cleve Cardiac Regenerative Medicine Program into the first shelf-stable skincare line using regenerative, platelet-derived exosomes. These aren’t generic exosomes; they’re a specific class shown in peer-reviewed trials to regenerate skin's appearance by improving the look of wrinkles, pigmentation, luminosity, and overall skin quality. It’s an elegant approach to visible signs of skin aging, recognized by Time as a Best Invention of 2024 and now used in more than 2,000 medical practices. Learn more at http://platedskinscience.com/
CONNECT with DrKF
Want more? Join our newsletter here: https://www.drkarafitzgerald.com/newsletter/ Or take our pop quiz and test your BioAge! https://www.drkarafitzgerald.com/bioagequiz
YouTube: https://tinyurl.com/hjpc8daz
Instagram: https://www.instagram.com/drkarafitzgerald/
Facebook: https://www.facebook.com/DrKaraFitzgerald/
DrKF Clinic: Patient consults with DrKF physicians including Younger You Concierge: https://tinyurl.com/yx4fjhkb
Younger You Practitioner Training Program: www.drkarafitzgerald.com/trainingyyi/
Younger You book: https://tinyurl.com/mr4d9tym
Better Broths and Healing Tonics book: https://tinyurl.com/3644mrfw

Dec 16, 2025 • 1h 20min
The Oral Microbiome: The Hidden Biomarker Driving Aging, Fertility & Systemic Inflammation
Functional dentistry is emerging as a powerful missing link in systems-based care. In this episode of New Frontiers in Functional Medicine, Dr. Kara Fitzgerald sits down with Staci Whitman, DMD, IFMCP, a leading voice in functional pediatric dentistry and co-founder of the upcoming Institute for Functional Dentistry. Together, they explore how the oral microbiome, airway health, saliva, hormones, nutrition, and stress physiology shape systemic inflammation, chronic disease risk, and long-term health outcomes.
You’ll learn how to recognize oral contributors to gut issues, autoimmunity, cardiometabolic disease, cognitive decline, sleep disorders, and more—plus practical tools you can use right away in a medical setting, including a simple five-question airway and breathing screener. If you’re looking to expand your longevity and whole-body health framework, this conversation offers clear, actionable insights you won’t want to miss.
Full show notes + references: https://www.drkarafitzgerald.com/fxmed-podcast/
GUEST DETAILS
Dr. Staci Whitman is a board-certified pediatric and functional dentist and co-founder of the Institute for Functional Dentistry (IFD). She integrates the oral microbiome, airway and sleep health, nutrition, hormones, and early childhood development into modern dental care. She also founded Bloom Kids Dentistry and has an upcoming book on the oral microbiome.
Website: http://doctorstaci.com
THANKS TO OUR SPONSORS
DIAMOND
DUTCH: https://dutchtest.com/for-providers
Biotics Research: https://bit.ly/2IHK6Xd
GOLD
TimeLine Nutrition: https://tinyurl.com/bdzx2xms
Vibrant Wellness: https://www.vibrant-wellness.com/
EXCLUSIVE OFFERS FROM OUR SPONSORS
OneSkin: Get 15% off OneSkin with the code DRKARA at http://oneskin.co/DRKARA
Find out why MitoQ’s mitochondria-targeting is a critical step for your healthspan and longevity strategy. http://mitoq.com/drkara
*CONNECT with DrKF*
Want more? Join our newsletter here: https://www.drkarafitzgerald.com/newsletter/ Or take our pop quiz and test your BioAge! https://www.drkarafitzgerald.com/bioagequiz
YouTube: https://tinyurl.com/hjpc8daz
Instagram: https://www.instagram.com/drkarafitzgerald/
Facebook: https://www.facebook.com/DrKaraFitzgerald/
DrKF Clinic: Patient consults with DrKF physicians including Younger You Concierge: https://tinyurl.com/yx4fjhkb
Younger You Practitioner Training Program: www.drkarafitzgerald.com/trainingyyi/
Younger You book: https://tinyurl.com/mr4d9tym
Better Broths and Healing Tonics book: https://tinyurl.com/3644mrfw

Dec 2, 2025 • 1h 6min
The Hidden Immune Signal Accelerating Aging & the Beta-Glucan That Fixes It
Beta-glucans might be one of the most overlooked levers in immune resilience, and that has major implications for longevity. Talking with my long-time friends and colleagues Drs. Bob Rountree and Chris D’Adamo reminded me just how powerful this molecule truly is. The clinical reach here is stunning, from immune aging and cancer support to vaccine response, gut–brain effects, and overall resilience.
What struck me most is how beta-glucans help the innate immune system respond more effectively over time, from overtraining and chronic infections to vaccine responsiveness. Clinicians really need this on their radar. I think you’re going to find this conversation eye-opening. ~DrKF
Check out the show notes at https://www.drkarafitzgerald.com/fxmed-podcast/ for the full list of links and resources.
GUEST DETAILS
Bob Rountree, MD, is a leading figure in integrative and functional medicine with more than 40 years of clinical experience. Medical Director of Boulder Wellcare and long-time IFM faculty, he is widely published and a respected educator in personalized medicine, botanical therapies, and immune health.
Chris D’Adamo, PhD, is a research scientist and epidemiologist focused on how nutrition, lifestyle, and environmental factors influence health. An Assistant Professor at the University of Maryland School of Medicine, he has led numerous clinical studies, published widely, and is a trusted advisor and educator in integrative and lifestyle medicine.
THANKS TO OUR SPONSOR
BetterWay Health (Consumers) BWHLabs (Practitioners)
WEBSITE: http://bwhlabs.com/kara
EXCLUSIVE OFFER FOR NEW FRONTIERS LISTENERS
Book a practitioner call and receive a complimentary bottle of beta-glucan to try personally or with a patient at http://bwhlabs.com/kara
CONNECT with DrKF
Want more? Join our newsletter here: https://www.drkarafitzgerald.com/newsletter/ Or take our pop quiz and test your BioAge! https://www.drkarafitzgerald.com/bioagequiz
YouTube: https://tinyurl.com/hjpc8daz
Instagram: https://www.instagram.com/drkarafitzgerald/
Facebook: https://www.facebook.com/DrKaraFitzgerald/
DrKF Clinic: Patient consults with DrKF physicians including Younger You Concierge: https://tinyurl.com/yx4fjhkb
Younger You Practitioner Training Program: www.drkarafitzgerald.com/trainingyyi/
Younger You book: https://tinyurl.com/mr4d9tym
Better Broths and Healing Tonics book: https://tinyurl.com/3644mrfw

Nov 17, 2025 • 1h 4min
From Hot Flashes to Healthspan: The FxMed Guide to Hormones & Longevity
In this episode of New Frontiers in Functional Medicine, Dr. Kara Fitzgerald sits down with hormone and women’s health expert Dr. Carrie Jones to explore the powerful connection between mitochondrial health and women’s hormones. Together, they unpack how mitochondrial function influences hormone balance, metabolism, energy, mood, and resilience, especially during perimenopause and menopause. Dr. Jones shares practical, evidence-based strategies to support mitochondrial health for optimal hormonal balance, improved sleep, and emotional well-being.
Listeners will gain actionable insights into functional medicine approaches to women’s hormone health, including how mitochondrial vitality can help ease hormonal transitions and enhance longevity.
Check out the show notes at https://www.drkarafitzgerald.com/fxmed-podcast/ for the full list of links and resources.
GUEST DETAILS
Dr. Carrie Jones, ND, FABNE, MPH, MSCP is an internationally recognized expert in women’s health and hormones. Known as the “Queen of Hormones,” she’s a naturopathic physician, educator, and Chief Medical Officer at NuEthix Formulations. With over 20 years in the field, Dr. Jones has shaped hormone education through her work with major functional labs and her hit podcast, Hello Hormones.
Email: drjones@drcarriejones.com
Website: https://www.drcarriejones.com/
THANKS TO OUR SPONSORS
DIAMOND
DUTCH: https://dutchtest.com/for-providers
Biotics Research: https://bit.ly/2IHK6Xd
GOLD
TimeLine Nutrition: https://tinyurl.com/bdzx2xms
Vibrant Wellness: https://www.vibrant-wellness.com/
EXCLUSIVE OFFERS FROM OUR SPONSORS
OneSkin: Get 15% off OneSkin with the code DRKARA at http://oneskin.co/DRKARA
Find out why MitoQ’s mitochondria-targeting is a critical step for your healthspan and longevity strategy. http://mitoq.com/drkara
*CONNECT with DrKF*
Want more? Join our newsletter here: https://www.drkarafitzgerald.com/newsletter/ Or take our pop quiz and test your BioAge! https://www.drkarafitzgerald.com/bioagequiz
YouTube: https://tinyurl.com/hjpc8daz
Instagram: https://www.instagram.com/drkarafitzgerald/
Facebook: https://www.facebook.com/DrKaraFitzgerald/
DrKF Clinic: Patient consults with DrKF physicians including Younger You Concierge: https://tinyurl.com/yx4fjhkb
Younger You Practitioner Training Program: www.drkarafitzgerald.com/trainingyyi/
Younger You book: https://tinyurl.com/mr4d9tym
Better Broths and Healing Tonics book: https://tinyurl.com/3644mrfw

Nov 4, 2025 • 36min
Guide to Building a Sustainable Concierge Longevity Practice
Dr. Brooke Stubbs, a double board-certified physician and founder of Rooted Femme, shares her journey from hospitalist medicine to a concierge model focused on women's health. She discusses the transition to preventive care, emphasizing personalized lifestyle changes for fertility and overall well-being. Brooke also dives into the logistics of building a concierge practice, including pricing strategies and the benefits of opting out of insurance. Her insights on functional lab integration and community engagement through wellness retreats offer valuable guidance for modern practitioners.

Oct 20, 2025 • 37min
Reversing Aging: Screening, Wearables & What To Do Now
Dr. Kara Fitzgerald talks with Sergey Young, founder of the Longevity Vision Fund and XPRIZE board member, about the future of aging medicine. Hear how AI, wearables, new diagnostics, and early screening are making longevity solutions more practical, affordable, and clinically relevant for functional medicine practitioners.
Check out the show notes at https://www.drkarafitzgerald.com/fxmed-podcast/ for the full list of links and resources.
GUEST DETAILS
Sergey Young is a longevity investor, author, and visionary committed to extending healthy lifespans for one billion people. He co-founded the BOLD Longevity Growth Fund, wrote the bestseller The Science and Technology of Growing Young, and serves on the boards of XPRIZE and AFAR.
Website: https://sergeyyoung.com/
Follow Sergey: @sergeyyoung200
THANKS TO OUR SPONSORS
DIAMOND
DUTCH: https://dutchtest.com/for-providers
GOLD
Vibrant Wellness: https://www.vibrant-wellness.com/
TimeLine Nutrition: https://tinyurl.com/bdzx2xms
EXCLUSIVE OFFERS FROM OUR SPONSORS
Find out why MitoQ’s mitochondria-targeting is a critical step for your healthspan and longevity strategy. http://mitoq.com/drkara
OneSkin: Get 15% off OneSkin with the code DRKARA at http://oneskin.co/DRKARA
CONNECT with DrKF - Want more? Join our newsletter here: https://www.drkarafitzgerald.com/newsletter/ Or take our pop quiz and test your BioAge! https://www.drkarafitzgerald.com/bioagequiz
YouTube: https://tinyurl.com/hjpc8daz
Instagram: https://www.instagram.com/drkarafitzgerald/
Facebook: https://www.facebook.com/DrKaraFitzgerald/
DrKF Clinic: Patient consults with DrKF physicians including Younger You Concierge: https://tinyurl.com/yx4fjhkb
Younger You Practitioner Training Program: www.drkarafitzgerald.com/trainingyyi/
Younger You book: https://tinyurl.com/mr4d9tym
Better Broths and Healing Tonics book: https://tinyurl.com/3644mrfw

Oct 7, 2025 • 47min
Aging & Hair Loss Explained: OS-01’s Science-Backed Approach
Hair loss is more than cosmetic. In this episode of New Frontiers in Functional Medicine, Dr. Kara Fitzgerald explores new research on the OS-01 peptide and its role in targeting senescent cells. Learn how peptide therapy compares to minoxidil, and how hormones, thyroid health, stress, UV exposure, and the scalp microbiome all play a role in thinning hair. Carolina Reis Oliveira, PhD, co-founder of OneSkin, shares insights on how polyphenols, prebiotics, and integrative strategies can support healthier growth.
Check out the show notes at https://www.drkarafitzgerald.com/fxmed-podcast/ for the full list of links and resources.
GUEST DETAILS
Carolina Reis Oliveira, PhD - OneSkin Co-Founder & CEO
Carolina Reis Oliveira, PhD, is the CEO and co-founder of OneSkin and an advocate for healthy aging. With a doctorate in immunology, she moved from Brazil to Silicon Valley to pursue her vision of using science to prevent age-related diseases. At OneSkin, she leads pioneering research on aging biology, including the development of the proprietary OS-01 peptide, the first scientifically proven to reverse skin’s biological age.
THANKS TO OUR SPONSOR
OneSkin: http://oneskin.co/DRKARA
EXCLUSIVE OFFER FOR NEW FRONTIERS LISTENERS
Interested in reclaiming your roots and addressing hair thinning? Visit https://oneskin.co/DRKARA for 15% off your purchase of OneSkin’s OS-01 HAIR peptide scalp serum.
CONNECT with DrKF
Want more? Join our newsletter here: https://www.drkarafitzgerald.com/newsletter/ Or take our pop quiz and test your BioAge! https://www.drkarafitzgerald.com/bioagequiz
YouTube: https://tinyurl.com/hjpc8daz
Instagram: https://www.instagram.com/drkarafitzgerald/
Facebook: https://www.facebook.com/DrKaraFitzgerald/
DrKF Clinic: Patient consults with DrKF physicians including Younger You Concierge: https://tinyurl.com/yx4fjhkb
Younger You book: https://tinyurl.com/mr4d9tym
Better Broths and Healing Tonics book: https://tinyurl.com/3644mrfw

Sep 25, 2025 • 56min
The Bile Acid Imbalance Accelerating Aging: How to Detect & Fix It
Dr. Tom Fabian, a translational scientist and microbiome research expert, sheds light on bile acid imbalances and their role in gut health. He discusses how specific types of inflammation and microbial patterns can guide interventions to improve patient outcomes. Notably, Tom connects low butyrate levels to inflammatory bowel disease and reveals the surprising ways some fibers might exacerbate gut irritation. He emphasizes using StoolOMX and GI-MAP tests for precision medicine in complex cases, making science practical for clinicians.

Sep 3, 2025 • 55min
Why Functional Medicine Is the Future of Longevity
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 down with three leading voices in medicine and research:
- Dr. Bob Rountree: functional medicine pioneer in integrative approaches to health
- Dr. Dale Bredesen: internationally recognized expert on Alzheimer’s prevention and reversal
- Dr. Charles Serhan: Harvard researcher on inflammation resolution and aging biology
Together, they explore how functional medicine reframes longevity by addressing root causes, supporting cognitive health, and resolving chronic inflammation.
Whether you’re a clinician, health professional, or simply passionate about living longer and healthier, this conversation offers a glimpse into the science and practical applications that are transforming longevity medicine.
WATCH NOW TO LEARN:
- Why functional medicine is central to extending healthspan
- The latest insights on Alzheimer’s prevention and brain health
- How inflammation resolution impacts aging and chronic disease
- What to expect in the full Functional Medicine is Longevity Medicine™ Masterclass
Learn more & register for the Masterclass here: www.functionalmedicineislongevitymedicine.com
THANKS TO OUR SPONSORS
DIAMOND
DUTCH: https://dutchtest.com/for-providers
Biotics Research: https://www.bioticsresearch.com/
GOLD
TimeLine Nutrition: https://tinyurl.com/bdzx2xms
Vibrant Wellness: https://www.vibrant-wellness.com/
EXCLUSIVE OFFERS FROM OUR SPONSORS
OneSkin: Get 15% off OneSkin with the code DRKARA at http://oneskin.co/DRKARA
Discover why MitoQ’s mitochondria-targeting is a critical step for your healthspan and longevity strategy. http://mitoq.com/drkara

Aug 17, 2025 • 1h 22min
Why Centenarians Are Defying Science: Secrets to Living 100+
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 shaped how we think about longevity—and what’s possible when we start targeting aging itself, not just individual diseases.
We get into the science behind why some people live 20–30 years longer and healthier, and what it means to measure the biological age of individual organs. But we also hit a few sparks—especially when it comes to nutraceuticals and the role of metformin in prevention. I don’t agree with everything you’ll hear, and I followed up with Dr. Barzilai afterward to unpack some of the more provocative claims. We may just need a second round for this one... stay tuned.
Check out the show notes at www.drkarafitzgerald.com/fxmed-podcast/ for all the relevant links and resources. ~DrKF
Check out the show notes at https://www.drkarafitzgerald.com/fxmed-podcast/ for the full list of links and resources.
GUEST DETAILS
Nir Barzilai M.D.
Director of the Einstein Institute for Aging Research
Professor of Medicine and Genetics
President of the Academy for Health & Lifespan Research
Website: https://einsteinmed.edu/faculty/484/nir-barzilai
Email: nir.barzilai@einsteinmed.edu
Dr. Nir Barzilai is a pioneer in aging science, known for his work on centenarians, the biology of aging, and the TAME trial. He is Director of the Institute for Aging Research at Albert Einstein College of Medicine and author of Age Later and has published over 330 papers.
THANKS TO OUR SPONSORS
DIAMOND
DUTCH: https://dutchtest.com/for-providers
Biotics Research: https://www.bioticsresearch.com/
GOLD
Vibrant Wellness: https://www.vibrant-wellness.com/
OneSkin: http://oneskin.co/DRKARA
EXCLUSIVE OFFERS FROM OUR SPONSORS
Find out why MitoQ’s mitochondria-targeting is a critical step for your healthspan and longevity strategy. http://mitoq.com/drkara
OneSkin: Get 15% off OneSkin with the code DRKARA at oneskin.co/DRKARA
CONNECT with DrKF
Want more? Join our newsletter here: https://www.drkarafitzgerald.com/newsletter/ Or take our pop quiz and test your BioAge! https://www.drkarafitzgerald.com/bioagequiz
YouTube: https://tinyurl.com/hjpc8daz
Instagram: https://www.instagram.com/drkarafitzgerald/
Facebook: https://www.facebook.com/DrKaraFitzgerald/
DrKF Clinic: Patient consults with DrKF physicians including Younger You Concierge: https://tinyurl.com/yx4fjhkb
Younger You Practitioner Training Program: https://www.drkarafitzgerald.com/trainingyyi/
Younger You book: https://tinyurl.com/mr4d9tym
Better Broths and Healing Tonics book: https://tinyurl.com/3644mrfw


