The FxMed Moments That “Broke the Internet” in 2025
Happy holidays, everyone! As you enjoy the festive season, I wanted to take a moment to reflect on some of the highlights from this past year here at Dr. Kara…
Functional Medicine Moves Fast. Stay Faster.
Get clinical updates, evidence-based protocols, and exclusive tools we use in clinic — delivered straight to your inbox. Perfect for practitioners and curious health enthusiasts alike.
Latest Blogs
Targeting Immune Aging: New Findings from the MitoImmune Study on Urolithin A (Mitopure®)
Can Mitopure®, and its active ingredient Urolithin A, support an aging immune system? As we recognize immune aging as a primary driver of age-related disease, this question has taken on…
How Are Functional Medicine Practitioners Using AI? Access DrKF’s Report
An excellent colleague of mine recently had an unpleasant experience when she discovered that every single citation in an article she’d generated using AI and sent over as a potential…
The Power of a 10-Day Detox: A Functional Medicine Reset for Energy, Focus, and Epigenetic Balance
As functional medicine practitioners, we know that nutrition and lifestyle are among the most powerful levers for preventing and reversing all chronic disease, from cardiovascular disease and hypertension to cancer…
Treatment-Resistant Depression: Why Standard Care Fails and What to Do About It
Despite a dramatic rise in antidepressant use in the United States since 1988, the number of Americans suffering from depression has not decreased. This leaves clinicians with a stark reality:…
Transforming Health, One Root Cause at a Time: A Conversation with Dr. Espinal
In this practitioner spotlight, Dr. Darisa Espinal, naturopathic physician at Dr. Kara Fitzgerald’s New Frontiers Functional Medicine Clinic, shares her journey into functional medicine, the types of patients she supports,…
Moving Beyond Glucosamine: The Future of Functional Joint Care
Osteoarthritis (OA) is a debilitating, chronic joint disease affecting about 33 million adults in the United States. As the aging population grows and obesity rates climb, this number is expected…
Rethinking Longevity Through a Functional Medicine Lens
Let’s be honest, the term “longevity medicine” has gotten a bit of a reputation lately. For many of us in functional medicine, it can feel like the exclusive domain of…
Fluoride & IQ: A Functional Medicine Take on Benefits, Risks & Latest Research
With thanks to Romilly Hodges, CNS, for her contributions to this article. I’m not here to fan the flames of controversy, but I do believe in asking smart, systems-oriented questions—especially…
Joining New Frontiers Clinic: Kirsten P. FitzGerald, DNP, FNP-BC & Functional Medicine Practitioner
We are delighted to announce that Dr. Kirsten FitzGerald*, DNP, FNP-BC, has joined the clinical team at the New Frontiers Functional Medicine Clinic. With a strong background in functional and…
Urolithin A: Mitochondrial Support for Longevity, Strength & Heart Health
Urolithin A is rapidly becoming a go-to longevity nutrient, and with good reason. Backed by 15 years of research and 11 human clinical trials, it is one of the most…
Avoiding Toxic Food Chemicals Just Got a Bit Easier: New Laws & What You Need to Know
When I was a kid at lunch, while my friends were eating those heavenly-looking ultraprocessed Twinkies and Ringdings and making dough balls with their white bread, I ate home-made yogurt…
PODCASTS - New Frontiers in Functional Medicine
Each month, I interview the best minds in Functional Medicine. Expect thought-provoking ideas, new research, lots of clinical pearls for practitioners and step-change information for consumers and patients. I hope you join us. Don’t hesitate to email me with ideas for future podcasts.
The Oral Microbiome: The Hidden Biomarker Driving Aging, Fertility & Systemic Inflammation
The oral microbiome belongs squarely in the functional medicine toolkit, and my conversation with Staci Whitman, DMD, IFMCP, makes that more clear than ever. As a board-certified pediatric dentist and…
The Hidden Immune Signal Accelerating Aging & the Beta-Glucan That Fixes It | Bob Rountree & Chris D’Adamo
New Frontiers in Functional Medicine® Podcast Sponsors Dr. Kara Fitzgerald is eternally grateful to our sponsors who, by blogging, podcasting and advertising with us, enable me and my team to…
From Hot Flashes to Healthspan: The FxMed Guide to Hormones & Longevity
Few guests bring the kind of insight and energy that Dr. Carrie Jones does. She’s a dear friend, a brilliant colleague, and truly deserves her title of Queen of Hormones.…
Guide to Building a Sustainable Concierge Longevity Practice
It really takes courage to completely change course and walk away from a successful hospital medicine career. Dr. Brooke Stubbs did just that after realizing the pace and pressure of…
Reversing Aging: Screening, Wearables & What To Do Now
When I sit down with Sergey Young, I’m always struck by the balance he brings. He’s deeply embedded in the future of longevity science, yet he champions the fundamentals we…
Aging & Hair Loss Explained: OS-01’s Science-Backed Approach
Hair loss isn’t just cosmetic. It’s a visible marker of aging biology and a profound emotional burden, and I think this is even more true for women. The last time…
The Bile Acid Imbalance Accelerating Aging: How to Detect & Fix It
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…
Why Functional Medicine Is the Future of Longevity
This is the longevity conversation functional medicine providers need to hear. What struck me in each of these conversations is how deeply functional medicine already holds the answers we’re chasing…
Why Centenarians Are Defying Science: Secrets to Living 100+
This conversation with Dr. Nir Barzilai is one of the most thought-provoking we’ve had on New Frontiers. His decades of research on centenarians, biological age, and the hallmarks of aging…
The Science-Backed Bitter Compound That Mimics GLP-1 (No Injections Needed!)
I’ve been watching the science behind Calocurb evolve over the last year, and I have to say—this is one of the most exciting clinical tools I’ve seen emerge in the…
10 Year Anniversary: What I Learned After 200+ Conversations with the Best Minds in FxMed
Before we dive in—I just want to say thank you. Ten years of New Frontiers wouldn’t have been possible without your support, your curiosity, and your commitment to moving this…
Dysfunctional Mitochondria Are Fueling Cardiovascular Aging — Here’s The Fix
This is a really exciting conversation with Dr. Davide D’Amico from Timeline, where we’re taking a closer look at Urolithin A and heart health. It should come as no surprise…
Our Sponsors
I am eternally grateful to our sponsors who, by blogging, podcasting and advertising with us, enable me and my team to devote energy and time to writing and publication. All the companies who sponsor us are companies that I trust for myself and my patients and use regularly in my clinical practice. Please check out their websites! – Dr. KF
Our Sponsors’ Medical Experts Provide Valuable Educational Resources
Our FxMED SPONSORED EDUCATION PAGE features continuing educational opportunities for professionals in functional medicine. Whether you are a seasoned veteran or a clinician new to functional medicine, industry experts can play an important role in furthering our education.
Clinic Team
Dr. Fitzgerald received her doctorate of naturopathic medicine from National College of Natural Medicine in Portland, Oregon.
Kenneth A. Litwin, MD FACP IFMCP, is a highly respected, board-certified Internal Medicine and Functional Medicine physician.
Darisa Espinal, ND, MS, received her doctorate in Naturopathic Medicine at the University of Bridgeport. She earned her BS in…
Kirsten P. FitzGerald, DNP, FNP-BC Family Nurse Practitioner Dr. Kirsten P. FitzGerald is a board-certified Family Nurse Practitioner with over…
Melissa Parker, MS CNS CDN, is a Certified Nutrition Specialist. During a decade-long career in the fashion industry she completed…
Miranda Kusi, MS CNS CDN, is a Certified Nutrition Specialist with a MS degree in Human Nutrition from the University…
Recipes
Festive Fish Pie: A Longevity-Boosting Holiday Recipe
Did you know that eating fish on Christmas Eve is a long-standing tradition in many parts of the world? Rooted in religious customs, especially the practice of abstaining from meat…
Tart-Sweet Cranberry & Beet Longevity Sauce
This cranberry sauce strikes the perfect balance of tart and sweet, and it’s far more versatile than just a turkey companion. Try it with pork or beef, spread it on…
No-Bake Energy Bites
These energy bites are a seed extravaganza! Infused with anti-inflammatory turmeric and fragrant lemon zest, they offer a punchy flavor while delivering healthy fats, fiber, and a whole host of…
Golden Hour Pistachio-Almond Cookies
This weekend, my daughter and my mom spent an afternoon in the kitchen, testing and perfecting these Golden Hour Pistachio-Almond Cookies. They started with a classic pistachio-almond cookie recipe and…
Bitter Melon with Eggs Recipe
I was blown away to learn that bitter melon, a primary component of the Okinawan diet and a common ingredient in many East Asian recipes, contains approximately 964 mg polyphenols…
Polyphenol-rich Winter Oatmeal
We love this combination of creamy oats, sweet apples, and warming spices for a fall or winter breakfast. It also works with peaches instead of apples! Oats are rich…
Glow & Thrive Longevity Mocktail
Sip Your Way to Health: The Glow & Thrive Mocktail Recipe for Longevity The New Year is a time for fresh starts, thoughtful intentions, and celebrations with loved…
Hearty Autumn Vegetable Soup with Epinutrients
Nourishing Autumn Vegetable Soup for Longevity As the crisp October air begins to settle in, it’s the perfect time to cozy up with a warm bowl of Hearty Autumn Vegetable…
Dairy-Free Creamy Pumpkin and Sage Risotto with Epinutrient Focus
As October brings a chill to the air, there’s nothing better than a comforting, creamy dish to warm you up. This Dairy-Free Creamy Pumpkin and Sage Risotto delivers all…
Younger You Autumn Salad with Citrus-Herb Dressing
This vibrant fall salad is packed with methylation-supporting nutrients, featuring a variety of colorful vegetables, healthy fats, and fresh herbs. The ingredients are carefully chosen to provide a balance…
Functional Fudge Cake
Functional Fudge Cake Functional Fudge Cake Servings Prep Time Cook Time 12servings 10minutes 45minutes Servings Prep Time 12servings 10minutes Cook Time 45minutes Course Dessert Ingredients 12 tbsp. ghee approximately 3/4…
Gluten-Free Yeast-Free Quick Bread
This quick gluten-free, yeast-free bread recipe requires very little effort and is a pleasantly tasty surprise. Plus it’s main ingredient – sunflower seeds – are a Younger You longevity superfood.…