Functional Medicine for Real-World Impact: The School of Applied Functional Medicine (SAFM)

Most practitioners assume the only honest path into functional medicine is to leave conventional medicine behind, and Katie Creedon has spent nearly two decades proving that assumption wrong.

Katie is an adult nurse practitioner with deep roots in geriatric care, a program director for a VA nurse practitioner residency, and the founder of New England Functional Wellness. On this episode of Functional Medicine for Real World Impac...

Recurring dysbiosis is a clinical clue that the body’s terrain still favors chaos over repair. On Functional Medicine for Real-World Impact, Tracy Harrison speaks directly to practitioners who keep seeing recurrent gut dysbiosis return after a short-lived win. Her point is direct. Recurrent gut dysbiosis is rarely a failure of testing or the wrong antimicrobial. More often, it reflects an internal environment that allows the imbala...

When symptom complaints keep getting brushed aside, a functional medicine health coach often sees the pattern a rushed visit misses. On Functional Medicine for Real-World Impact, host Tracy Harrison talks with Meredith Orlowski about what practitioners need to understand when women in perimenopause present with fatigue, weight change, skin issues, anxiety, and subclinical hypothyroidism. This episode shows how a functional medicine...

Clear communication shapes how patients understand their health and how colleagues evaluate clinical thinking. In this episode of Functional Medicine for Real-World Impact, Tracy Harrison explores why functional medicine language matters more than many providers realize. The way we describe physiology, stress, and chronic disease influences patient understanding and professional collaboration. For medical practitioners who want str...

A functional medicine career transition can feel risky when your training rewards speed, compliance, and output over depth. If you are quietly questioning your current path, this conversation will meet you there. Tracy Harrison and Dr. Lara Salyer talk openly about what makes a functional medicine career transition succeed and why more credentials alone will not create change. They focus on practitioner activation, the shift from c...

Vitamin D myths continue to shape clinical decisions in ways that can cost practitioners clarity and better outcomes. If you have ever seen a low lab value and felt pressure to increase the dose quickly, this episode will help you pause and rethink your approach. In this episode of Functional Medicine for Real-World Impact, Tracy Harrison explains why vitamin D myths persist even among experienced clinicians and why correcting them...

Melatonin may be best known for sleep, yet its real power lies in protecting mitochondria, repairing the gut, and calming immune chaos across the entire body.

This conversation challenges the narrow way melatonin is usually framed and invites a broader clinical lens. Tracy Harrison explains why much of melatonin’s most meaningful work happens inside cells rather than in the pineal gland, where it supports mitochondrial health and...

Functional medicine becomes far more powerful when it slows down, listens closely, and focuses on simple changes that help patients reclaim trust in their own ability to heal.

In this episode, Tracy Harrison speaks with nurse practitioner Lisa Vasile about what functional medicine looks like when it is practiced with restraint, clarity, and real-world perspective. Lisa reflects on her journey through conventional nursing, women’s...

Iron can be both life-saving and quietly destructive and understanding when it fuels healing versus when it drives inflammation is one of the most important clinical distinctions practitioners can make.

This episode invites practitioners to rethink iron as more than a lab value to correct or a supplement to prescribe. Tracy Harrison reframes iron as a powerful regulator of energy, immunity, brain function, and inflammation, one t...

A German-trained physician shares how functional medicine helped her finally understand why lifelong eczema persisted and what changed when she stopped chasing symptoms and started addressing immune overload.

In this episode, Tracy Harrison speaks with Julia Martin, MD, HC, about the gap between conventional medical training and real-world healing. Julia reflects on living with eczema since childhood, becoming a licensed physicia...

What if your most powerful clinical tool is not another lab panel but the way you partner with patients around what their bodies already know?

Functional medicine PA Zoie Phillips joins Tracy Harrison to share how choosing integrity over a conventional career path led her to a values-based, telemedicine practice where patients act as true partners rather than passive recipients. She walks through her decision to commit to functio...

Hidden toxins in your air, products, technology and even inner dialogue may shape your patients’ physiology far more than their diet or exercise, and this conversation asks you to look at those influences through a sharper functional medicine lens. 

In this episode, Tracy Harrison breaks toxicity down into categories such as indoor air quality, fragrance and phthalates, plastics and microplastics, overlooked heavy metals and the ...

Dairy’s trusted role in patient diets shifts as Tracy Harrison breaks down how it can drive inflammation, immune reactivity, and persistent symptoms that rarely get linked to food in clinical practice. She explains why lactose intolerance is far more common than most patients realize, how whey and casein can contribute to skin issues, congestion, joint pain, fatigue, and histamine overload, and why some patients tolerate goat or sh...

Most chronic disease protocols fail because the body won’t heal until it feels safe - and that sense of safety starts with the vagus nerve.

Tracy Harrison takes a closer look at what it really means for the body to be ready to heal. Why do some patients follow every recommendation yet still struggle to make lasting progress? What if the real barrier isn’t what they’re missing, but how their nervous system is responding to the wor...

Functional medicine can only create real change when practitioners move beyond collecting information and start developing the confidence, efficiency, and teamwork that bring healing to life.

Tracy Harrison invites practitioners to think honestly about what it means to do this work well. How do you turn deep scientific knowledge into practical, lasting results for real people? How do you keep your passion alive without running yo...

Limiting beliefs have a way of sneaking into the work of functional medicine practitioners and Tracy Harrison is pulling them into the light. Have you ever felt like you had to do everything on your own to be credible, or that you should wait until you know absolutely everything before you start? Tracy makes the case for why those assumptions hold you back and how confidence is built through real practice, not endless preparation.

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Food sensitivities often play a bigger role in chronic health problems than many practitioners realize. 

In this episode, Tracy Harrison unpacks how foods that look perfectly healthy on the surface can still trigger immune responses that drive inflammation and dysfunction. She explains the differences between IgG and IgA mediated reactions, explores why intestinal permeability matters, and points out the impact of common medicati...

So much of functional medicine celebrates the latest science, but how often does that knowledge actually change a patient’s life? Tracy Harrison invites us to look closer at the gap between information and transformation. Why do so many people collect new diagnoses, run more tests, or add another supplement yet still feel stuck? What gets in the way of real change, and how can practitioners guide patients through it?

In this epis...

The antioxidant trap challenges the assumption that more supplements always mean better health. Tracy Harrison explains how oxidative stress, often seen as harmful, is also essential for normal physiology and for activating the body’s innate antioxidant defenses. She shows why hormesis, the right amount of stress in the right context, builds resilience, while too much can tip the body into harm.

Tracy challenges common myths, inc...