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 Impact, host Tracy Harrison sits down with Katie to talk about what functional medicine for nurse practitioners looks like when it is built gradually, intentionally, and without abandoning the clinical foundation that makes the work credible.

Katie’s path has not been a straight line. She kept her footing in conventional medicine while building something new on the side, and that deliberate pace turned out to be exactly right for her life, her family, and her sense of professional credibility. She talks about what finally pushed her to act, why the mosaic career model works better for most practitioners than the all-or-nothing narrative suggests, and what she has learned about keeping care simple when the functional medicine toolbox makes complexity feel like progress.

Brain health in midlife sits at the center of Katie’s clinical focus. After years of watching dementia affect patients and families in nursing home settings, she became convinced that dementia prevention deserved far more attention than conventional care was giving it. Her perspective on healthy aging functional medicine is grounded in real clinical experience, and she is candid about the challenges of bringing that message to patients who are not yet thinking about their brains and to colleagues who remain skeptical of the field.

If you are navigating an integrative medicine career transition and wondering whether you have to choose between stability and alignment, Katie’s experience offers a more honest picture of what the path can look like.

Episode Breakdown:

00:00 Introduction to Functional Medicine for Nurse Practitioners

01:48 Katie Creedon's Background in Geriatric Care

05:53 How a Grandmother Shaped a Career in Aging

10:07 When Conventional Medicine Stops Being Enough

14:10 Finding Functional Medicine and Reigniting Clinical Purpose

18:16 Integrating Functional Medicine Into a Conventional Role

23:16 Building a Practice Gradually Without Burning It All Down

27:11 Why Both Conventional and Functional Medicine Matter

32:32 Mentoring New Nurse Practitioners With a Root Cause Lens

37:00 The Best and Worst of Functional Medicine in Practice

44:19 What Starting a Business Teaches You About Yourself

49:45 Dementia Prevention and Brain Health in Midlife

56:16 Letting Your Why Drive Your Courage

57:41 Advice for Practitioners Ready to Realign Their Careers

Connect with Katie Creedon:

Visit the New England Functional Wellness website

Follow New England Functional Wellness on Instagram

Connect with Katie on LinkedIn

New England Functional Wellness Linktree

Email Katie at katie@newenglandfunctionalwellness.com

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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 imbalance to persist.

This conversation is for practitioners who are tired of the revolving door. When a patient improves for a few weeks and then slides back into symptoms, Tracy urges you to look upstream. She walks through the clinical patterns that can keep dysbiosis in place even when interventions seem solid. That includes hypochlorhydria, pancreatic insufficiency, poor bile flow, impaired gut motility, and everyday habits that keep digestion from doing its job. She also explains that maldigested food is a common root cause of small intestinal bacterial overgrowth - but often left unexplored.

One of the strongest parts of this discussion is the reminder that the mouth is part of the gut. Oral dysbiosis, poor chewing, dry mouth, and common mouthwash habits can influence what happens farther downstream. Tracy also brings attention to medication patterns that quietly keep patients stuck, from acid suppressing drugs to NSAIDs, antibiotics, steroids, and metformin. For busy providers, that makes this episode useful because it brings everyday case details back into focus.

Gut healing is not only about what to remove. It is about what needs to work again. Diet quality matters. Bowel habits matter. The nervous system matters. Tracy makes a clear connection between stress and gut health, showing how chronic sympathetic activation can impair digestion, weaken immune resilience, and keep patients locked in recurrence. If you want better long-term outcomes, this episode will help you shift from chasing bugs to rebuilding terrain. That shift is what can break the cycle of recurrent dysbiosis and gives providers a more durable path forward.

Episode Breakdown:

00:00 Recurrent Gut Dysbiosis and the Revolving Door Problem

02:24 Why Gut Dysbiosis Keeps Coming Back in Clinical Practice

04:43 Maldigestion, Hypochlorhydria, and Small Intestinal Bacterial Overgrowth

11:46 Impaired Gut Motility, Thyroid Function, and Constipation Clues

16:17 Oral Dysbiosis, Chewing, and Why the Mouth Shapes Gut Health

23:19 Medications That Can Quietly Sustain Gut Dysbiosis

30:24 Diet, Fiber, and Feeding the Gut Microbiome the Right Way

32:43 Stress and Gut Health Through the Nervous System Connection

39:29 How to Stop Recurrent Gut Dysbiosis by Changing the Terrain

SAFM Links:

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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 health coach brings context, pacing, and partnership to cases where education alone does not move care forward.

For health workers, providers, and coaches, this conversation offers a practical lens on functional medicine for perimenopause and why symptoms deserve a systems view instead of a normal aging label. Meredith connects hormone shifts with gut health, stress load, and histamine patterns, including the role of gut health and histamine intolerance in skin flares, inflammation, and mood changes. She also explains why a perimenopause health coach helps patients follow through by building plans around readiness, feedback, and real life limits.

The episode also makes a strong case for functional medicine training for health coaches by showing how deeper clinical thinking strengthens outcomes, referrals, and collaboration across care teams. If your work includes women who feel unheard or stuck, this conversation offers a grounded example of how a functional medicine health coach supports clearer thinking, better patient buy in, and more useful care.

Episode Breakdown:

00:00 Functional Medicine Health Coaching in Real Clinical Practice

01:48 Meredith Orlowski’s Journey From Thyroid Symptoms to Health Coaching

07:59 Why Women in Perimenopause Need Better Answers for Fatigue, Weight Gain, and Thyroid Issues

11:10 Perimenopause as a Wake-Up Call for Stress, Boundaries, and Self-Care

16:21 How to Build a Successful Health Coaching Practice Through Referrals and Testimonials

26:58 Effective Health Coaching Strategies That Improve Client Follow-Through

32:55 Hidden Perimenopause Symptoms Including Inflammation, Eczema, and Estrogen Dominance

36:26 Gut Health, Histamine Intolerance, and Skin Issues in Perimenopause

43:50 Endocrine Disruptors, Clean Products, and Hormone Balance in Midlife

46:30 Why Functional Medicine Training Helps Health Coaches Handle Complex Cases

52:40 Client Success Story With Weight Loss, Skin Relief, and Better Gut Health

57:34 Meredith’s Advice for Health Coaches Considering Functional Medicine Training

Connect with Meredith Orlowski:

Visit the Root to Leaf Wellness website

Follow Root to Leaf Wellness on Instagram

Follow Root to Leaf Wellness on Facebook

Connect with Meredith on LinkedIn

Email: roottoleafwellness@gmail.com

SAFM Links:

Take SAFM’s 10 CME course - The Essential Gut Deep Dive

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Podcast production and show notes provided by HiveCast.fm

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 stronger communication with patients and peers, this conversation highlights why precision in functional medicine supports clearer thinking, better care, and stronger professional trust.

Tracy examines how commonly used phrases can unintentionally weaken functional medicine credibility. Terms such as adrenal fatigue, leaky gut, and bad cholesterol may sound familiar, but they often oversimplify complex biology. Instead, she explains how more accurate explanations can strengthen patient education in functional medicine. When providers understand the science behind concepts like HPA axis dysregulation and enhanced intestinal permeability, they can communicate in ways that are both accessible and medically sound.

The episode also offers a practical reminder that functional medicine language reflects clinical reasoning. Clear communication helps patients understand the connection between lifestyle choices and physiological changes while allowing providers to collaborate more effectively across conventional and integrative settings.

For practitioners focused on improving outcomes in chronic disease care, this episode offers a useful perspective on how functional medicine language shapes patient understanding and professional credibility. Maintaining precision in functional medicine strengthens patient education and supports more effective care.

Episode Breakdown:

00:00 Why Functional Medicine Language and Precision Matter

05:10 Why Providers Should Stop Saying Adrenal Fatigue

11:40 The Science Behind “Leaky Gut” and Enhanced Intestinal Permeability

16:30 The Cortisol Steal Myth and Hormone Balance

21:20 Why LDL Is Not “Bad Cholesterol”

31:30 Detox Myths and Why Detox Should Not Come First in Treatment

39:30 Step by Step Root Cause Care in Functional Medicine

SAFM Links:

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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 collecting knowledge to taking aligned action in your real clinical life.

You will hear a discussion of physician burnout recovery and why burnout often reflects a loss of agency rather than a lack of skill. Dr. Lara Salyer explains why a new job or business model does not automatically solve the problem, and how a different lens on patient outcomes can protect your energy without lowering standards. This shift supports a true transformational care partnership where patients share responsibility instead of expecting to be rescued.

If you are exploring a functional medicine career transition, this episode will help you evaluate what kind of functional medicine practice model fits your values, your market, and your long term capacity. You will gain clarity on what to build, what to release, and how to design a functional medicine career transition that feels sustainable and grounded in who you are as a provider.

Episode Breakdown:

00:00 Functional Medicine for Real World Impact With Tracy Harrison and Dr. Lara Salyer

01:51 Dr. Lara Salyer’s Functional Medicine Career Transition From Rural Family Medicine

08:00 Physician Burnout Recovery and Burnout as Grief in Modern Medicine

19:41 Transformational Care Partnership and Patient Shared Responsibility

21:41 Letting Go of Patient Outcomes to Protect Provider Energy

28:00 Why Plug and Play Templates Fail and How Community Drives Practice Growth

33:44 Practitioner Activation and Moving From Training to Implementation

41:56 The Provider Who Thrives Next and What Healthcare Needs Now

Connect with Dr. Lara Salyer:

Visit Dr. Lara’s website

Follow Dr. Lara on Instagram

Follow Dr. Lara on Facebook

Connect with Dr. Lara on LinkedIn

Subscribe to Dr. Lara’s YouTube channel

Follow Creativity Doctor on TikTok

SAFM Links:

Take SAFM’s 10 CME course - The Essential Gut Deep Dive

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Podcast production and show notes provided by HiveCast.fm

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 requires a stronger understanding of physiology rather than simply more supplementation.

You will hear a practical explanation of vitamin D as a hormone and how that shifts the way you interpret lab markers, symptoms, and dosing. Treating vitamin D as a simple nutrient misses its role in receptor activation and downstream signaling. Tracy outlines the real concerns around vitamin D supplementation risks, especially when higher doses are used in patients with inflammation or autoimmune patterns. The goal is not to avoid vitamin D, but to use it with precision and awareness.

This episode walks through 25-hydroxy vs 1,25-dihydroxy vitamin D and why this distinction matters in practice. A low 25-hydroxy value does not always mean deficiency, and an elevated 1,25-dihydroxy level can reflect inflammation-driven conversion rather than optimal status. Tracy explains how vitamin D and parathyroid hormone PTH work together as a feedback system. Looking at these markers together provides clearer insight into whether vitamin D effects are truly sufficient at the tissue level.

You will also learn why vitamin D cofactors magnesium, vitamin A, and vitamin K2 are essential for proper metabolism and receptor function. Without adequate magnesium for conversion, retinol for receptor activation, and vitamin K2 for calcium regulation, supplementation may stall or even create new issues. Understanding this synergy helps move beyond common vitamin D myths and toward a cleaner clinical framework you can apply with confidence.

Episode Breakdown:

00:00 Vitamin D Myths and Clinical Misunderstandings

02:20 Vitamin D as a Hormone and Receptor Activation

09:09 Sunlight vs Supplementation and Vitamin D2 Risks

13:32 25-Hydroxy vs 1,25-Dihydroxy Vitamin D Testing

18:24 Vitamin D and Parathyroid Hormone PTH Explained

27:50 High Dose Vitamin D and Autoimmune Disease Risks

40:55 Vitamin D Cofactors Magnesium Vitamin A and Vitamin K2

SAFM Links:

Take SAFM’s 10 CME course - The Essential Gut Deep Dive

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Podcast production and show notes provided by HiveCast.fm

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 antioxidant balance. What happens when this system quietly weakens over time? How might that shift influence energy, cognition, cardiovascular health, or recovery from illness?

The episode also explores melatonin’s central role in the gut, where it supports motility, barrier integrity, and microbial balance. Since so much immune activity begins there, melatonin emerges as a quiet regulator of immune tolerance and inflammatory tone. Could recurring infections, autoimmune patterns, or lingering post-viral symptoms point to a deeper melatonin story that has been overlooked?

Tracy also offers practical ways to think about assessment and supplementation. Poor sleep onset, frequent illness, oxidative stress markers, and non-dipping nighttime blood pressure can all offer clues. She explains why dosing must be individualized and why more is not always better, especially when morning fatigue or blood sugar shifts appear. The takeaway is simple and challenging at the same time: melatonin deserves respect as a systemic signal of resilience, not a one-size-fits-all sleep aid.

Episode Breakdown:

00:00 Melatonin Beyond Sleep The Antioxidant Role Most People Miss

04:10 Mitochondrial Melatonin and Cellular Protection

10:30 Pineal Versus Mitochondrial Melatonin and Sleep Timing

17:45 Gut Derived Melatonin and Intestinal Barrier Health

26:10 Melatonin and Immune Regulation Through T Regulatory Cells

33:40 Rethinking Melatonin as a Core Tool for Resilient Healing

SAFM Links:

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Podcast production and show notes provided by HiveCast.fm

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 health, education, and her own celiac diagnosis, and how those experiences exposed the limits of symptom-based care. Rather than chasing answers through endless testing, she explains why understanding the person, setting expectations, and addressing foundational habits often leads to the most meaningful change.

The conversation challenges common assumptions in both conventional and functional medicine. Are patients truly unwilling to change, or have they simply never been given context and support? What happens when practitioners slow down and stop trying to fix everything at once? Through clinical stories and hard-earned insight, Lisa makes a case for simpler interventions, thoughtful timelines, and partnerships that help patients build confidence in their body’s ability to heal.

Episode Breakdown:

00:00 Introduction to Functional Medicine and Real-World Impact

01:31 Lisa Vasile’s Journey from Conventional Nursing to Functional Medicine

11:51 How Celiac Disease Changed Lisa’s Approach to Healing

16:11 Choosing and Building Sustainable Functional Medicine Practice Models

27:52 Patient-Centered Care and the Power of Listening

31:07 Common Pitfalls in Functional Medicine and When Less Is More

54:24 A Transformative Patient Story That Redefined Healing

Connect with Lisa Vasile:

Email: Lisa@4BetterHealthMedicine.com

Visit 4betterhealthmedicine.com

Connect with Lisa on LinkedIn

Follow 4 Better Health on Instagram

4 Better Health's Facebook Page

SAFM Links:

Take SAFM’s 10 CME course - The Essential Gut Deep Dive

Get weekly Clinical Tips in your inbox

Learn more about SAFM’s practitioner training

Subscribe to our YouTube channel

Access daily quick tips on Facebook

Podcast production and show notes provided by HiveCast.fm