What if sauna therapy supports more than relaxation, influencing detoxification, circulation, and long-term health?

In this episode of Modern Thyroid and Wellness, McCall McPherson sits down with Connie Zack, co-founder of Sunlighten, to unpack the science, strategy, and real-world benefits of sauna therapy. Connie shares the deeply personal story that led her and her husband to leave careers in pharmaceutical sales and build Sunlighten after seeing infrared therapy transform her brother’s health. Connie and her husband started Sunlighten more than 20 years ago after her brother’s life changed through infrared light therapy, and the company continues to focus on science-backed infrared sauna technology.

Together, McCall and Connie break down the differences between traditional saunas and infrared saunas, why all infrared saunas are not created equal, what far infrared actually does inside the body, and how sauna use can support cardiovascular health, detoxification, skin, nervous system regulation, and overall longevity. They also discuss red light therapy, what to look for when shopping for a sauna, and how to think about sauna use as a practical part of a wellness routine.

This episode is a helpful guide for anyone curious about sauna therapy and wanting a clearer, more evidence-informed understanding of how to choose the right sauna and use it well.

Episode Highlights

1. Connie Zack’s personal story of how her brother’s chronic illness led her into the world of infrared light and sauna therapy
2. Why Connie and her husband left stable pharmaceutical careers to build Sunlighten
3. The difference between traditional saunas and infrared saunas
4. How traditional saunas heat the air, while infrared heats the body more directly
5. Why far infrared is the foundational wavelength in infrared sauna therapy
6. Why all infrared saunas are not the same and what consumers should watch out for
7. Why heater surface temperature matters more than cabin air temperature in infrared sauna performance
8. The importance of low EMF design and non-toxic building materials
9. How infrared sauna use may support detoxification, circulation, and skin health
10. Why combining far infrared, near infrared, and red light creates a more complete wellness experience
11. The role of red light and near infrared light in supporting collagen, skin repair, and cellular energy
12. Why Connie considers sauna use one of the best whole-body longevity tools available
13. Research discussed around cardiovascular health, blood pressure, nervous system support, and long-term wellness
14. How sauna can support a shift from sympathetic stress mode into a more parasympathetic, restorative state
15. Connie’s approach to habit stacking and using sauna time intentionally
16. The differences between Sunlighten’s Solo, Signature, Amplify, and mPulse collections
17. Why the Sunlighten red light panel and mask may be useful tools for skin, recovery, and wellness routines

Resources & Links

1. Sunlighten: https://www.sunlighten.com/
2. Connie Zack LinkedIn: https://www.linkedin.com/in/conniezack/

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What if the reason many thyroid patients struggle is not the condition itself, but how thyroid care is traditionally approached?

In this episode of Modern Thyroid and Wellness, McCall McPherson continues the clinician interview series by introducing three more members of the Modern Thyroid Clinic team: Yari Tran, PA-C, Melody Volz, FNP-C, and Nikki Abelow, APRN. Yari earned her psychology degree at Texas A&M and her physician assistant training at Texas Tech, then began in neurosurgery and pain management before shifting into root-cause thyroid and hormone care. Melody trained at the University of Texas at Austin, became a family nurse practitioner in 2014, and brings both clinical expertise and her own history of hypothyroidism and Hashimoto’s to patient care. Nikki, a Florida-based APRN, graduated from Chamberlain University in 2019 after working as a cardiac nurse and later pursued additional functional medicine training through the School of Applied Functional Medicine.

This conversation gives listeners a behind-the-scenes look at how each clinician found their way into medicine, what changed their perspective on conventional thyroid care, and why they are so passionate about individualized treatment. Across all three interviews, a shared theme emerges: thyroid care is rarely simple, TSH alone is not enough, and patients deserve to feel seen, heard, and fully supported.

Note About This Episode

Hillary Mayers was originally scheduled to appear in this episode. Due to a technical error during recording and editing, we were unable to include her segment. We greatly value Hillary’s insights and expertise, and she will be featured in a dedicated solo episode in the future. Thank you for your understanding.

We truly appreciate your patience and support as we navigate this, and we’re excited to continue bringing you meaningful content in Thursday’s episode.

Episode Highlights

1. Why this clinician interview series was created and what listeners can expect from future parts
2. Yari’s early love of medicine, from bringing an anatomy textbook to kindergarten show-and-tell to becoming a PA
3. The hormone conference that changed Yari’s entire view of thyroid and chronic symptom care
4. Why conventional, insurance-based models make nuanced thyroid treatment difficult
5. Yari’s take on one major misconception: thyroid treatment is never one-size-fits-all
6. Melody’s personal story of being diagnosed with hypothyroidism and Hashimoto’s after struggling for answers as a teenager
7. How Melody learned firsthand that “normal” labs do not always mean patients feel well
8. Why Melody believes thyroid disease is not a life sentence when treated properly
9. Nikki’s path from nursing into functional medicine after her own health challenges led her to question conventional care
10. Nikki’s experience of being told a TSH in the 3s was “normal” despite obvious symptoms
11. Why Nikki is passionate about creating generational health by educating mothers and daughters earlier
12. The shared message from all three clinicians: patients do better when care is personalized, symptom-aware, and root-cause focused
13. Fun personal details, from Yari’s love of 80s and 90s country to Melody being a twin and Nikki’s love of cruising and Alaska

In This Episode, You Will Learn

1. Why many thyroid patients still struggle when care focuses only on TSH
2. How thyroid symptoms can be real even when standard labs appear “normal”
3. Why full thyroid panels, thoughtful medication choices, and individualized dosing matter
4. The difference between treating Hashimoto’s and simply replacing thyroid hormone
5. Why many women are dismissed with “you’re just tired,” “you’re just a mom,” or “it’s not your thyroid”
6. How proper thyroid care can restore quality of life, energy, confidence, and hope
7. Why clinicians who have lived through thyroid dysfunction themselves often bring deeper empathy to care
8. How Modern Thyroid Clinic’s approach combines education, empowerment, and precision

About the Clinicians

Yari Tran, PA-C began her medical career in neurosurgery and pain management before a hormone education conference reshaped her clinical perspective and sparked her passion for functional thyroid and hormone care. She lives in Austin with her two daughters and enjoys reading, running, and hiking.

Melody Volz, FNP-C earned both her BSN and MSN from the University of Texas at Austin and became a certified family nurse practitioner in 2014. Her own experience with hypothyroidism and Hashimoto’s helped shape her patient-centered approach to thyroid and hormone care.

Nikki Abelow, APRN is a Florida-based advanced practice registered nurse who came from a cardiac nursing background and later expanded into functional medicine after her own health challenges pushed her to look beyond conventional care. She lives in Florida with her husband and son.

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What if the reason you still feel tired after optimizing hormones is not your hormones at all?

In this episode, Michael sits down with Patrick Sullivan Jr. and Ashley Sullivan, the executive producers behind the new documentary Breaking Big Food: How the American Food System Went Rotten and How It's Being Revived. Their mission to expose the problems within the modern food system began with a deeply personal experience: Patrick’s thyroid cancer diagnosis.

Patrick shares the emotional journey of discovering a lump in his neck, navigating multiple biopsies, and ultimately undergoing thyroid surgery. The experience sparked a deeper question that traditional medicine could not answer: why did cancer develop in the first place? That question ultimately led the couple into the world of metabolic health, food quality, and environmental influences on chronic disease.

The conversation explores how processed foods, corporate food systems, and environmental toxins may contribute to widespread metabolic dysfunction, thyroid disease, and chronic illness. Patrick and Ashley also share insights from their documentary, including shocking discoveries about how tobacco companies once controlled a large portion of the American food supply.

Inspired by their journey, the couple also launched Firefly Organic Coffee and Market, a Scottsdale-based café focused on mold-free organic coffee and nutrient-dense foods. This episode connects the dots between food, stress, environment, and long-term health while highlighting how personal pain can become a powerful purpose.

👤 About the Guests

Patrick Sullivan Jr.

Patrick Sullivan Jr. is an entrepreneur, filmmaker, and thyroid cancer survivor. After his diagnosis over a decade ago, he began exploring the deeper connections between food, environmental exposures, stress, and metabolic health. Patrick is the executive producer of the documentary Breaking Big Food, which investigates the history of the American food system and its impact on chronic disease.

Ashley Sullivan

Ashley Sullivan is a business owner, producer, and wellness advocate who works alongside Patrick in both their film and food initiatives. She co-produced Breaking Big Food and co-founded Firefly Organic Coffee and Market, a Scottsdale café dedicated to providing organic, mold-free coffee and access to nutrient-dense foods that support better health.

🔑 Key Topics Covered

1. Patrick’s thyroid cancer diagnosis and the stress of navigating uncertain test results
2. Why thyroid cancer often raises deeper questions about environmental and lifestyle factors
3. The emotional and physical impact of living with a cancer diagnosis
4. The influence of chronic stress on metabolic and thyroid health
5. How food quality can influence inflammation and long-term disease risk
6. The surprising history of tobacco companies acquiring major food brands in the 1980s
7. Why processed foods are engineered to be addictive
8. The connection between metabolic dysfunction and the modern food system
9. Small dietary changes that can dramatically improve health outcomes
10. The inspiration behind the documentary Breaking Big Food
11. Launching Firefly Organic Coffee and Market to provide clean food options
12. The issue of mold contamination in coffee and why sourcing matters

🎬 Resources and Links Mentioned

📺 Watch the Documentary

Breaking Big Food: How the American Food System Went Rotten and How It's Being Revived

Available on Apple TV and Amazon Prime Video

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What if the reason many thyroid patients still feel unwell is not their labs, but how their symptoms are being interpreted?

Today’s episode is the first installment of a multi-part clinician interview series on the Modern Thyroid Clinic podcast. Host McCall McPherson sits down with three of the clinic’s clinicians, Brandy Valentino, RN, WHNP, CNM, Jessica Strauss, DNP, FNP-C, and Krystal Adams, MSN, FNP-BC, LSO, to help listeners get to know the people behind the care.

Together, they share their personal journeys into medicine, what led them to thyroid and hormone work, and why individualized, symptom-driven care matters so much for thyroid patients. You will also hear candid conversations about medical gaslighting, obesity bias, the limitations of TSH-only testing, and why many people with “normal labs” still feel miserable. Along the way, the episode brings plenty of personality and behind-the-scenes stories, including Brandy’s early inspiration from a care flight helicopter tour, Jessica’s love of travel and Disney, and Krystal’s surprising connection to a military dolphin trainer story.

Episode Highlights

1. Why this clinician interview series was created and what to expect in future parts
2. Brandy’s story of being inspired in third grade by a care flight helicopter visit
3. Brandy’s background in labor and delivery, women’s health, and midwifery
4. How Brandy transitioned into thyroid care after questioning algorithm-based hormone protocols
5. What Brandy finds most meaningful: the “fast forward” moment when patients get their lives back
6. The misconception Brandy wants patients to understand: thyroid care is highly individualized
7. The reality of being dismissed with “it’s not your thyroid” and why that harms patients
8. Jessica’s personal experience of thyroid symptoms despite consistently “normal” TSH
9. How Jessica’s training included a more nuanced view beyond basic thyroid teaching
10. A powerful story: antibodies rising dramatically and an endocrinology response of “nothing different to do”
11. How obesity bias impacts care and how it can delay diagnosis and worsen outcomes
12. Why Modern Thyroid Clinic prioritizes listening, full panels, and patient empowerment
13. Jessica’s favorite part of the work: celebrating symptom improvement and life restoration
14. Jessica’s view: thyroid issues are not a life sentence when treated appropriately
15. Krystal’s early foundation in prevention-focused care and integrative medicine
16. How Krystal’s friend’s thyroid storm and Graves disease helped pull her deeper into thyroid work
17. Why hormones and thyroid must be addressed together, especially in midlife
18. Krystal’s experience diagnosing Hashimoto’s in patients who were never told they had it, even after decades
19. Common misunderstandings: antibodies matter, T3 can be life-changing, lifestyle can amplify results
20. A striking example: a patient’s TSH dropping from around 100 to under 1 with treatment and labs normalizing quickly
21. Behind-the-scenes fun: Hawaii, a huge family, and the military dolphin trainer story

In This Episode, You Will Learn

1. Why many thyroid patients still struggle when care focuses only on TSH
2. How thyroid symptoms can be real even when labs appear “normal” on limited testing
3. Why full thyroid panels and antibody tracking can change clinical decisions and outcomes
4. How gaslighting and obesity bias show up in real healthcare settings
5. Why thyroid and hormones often need to be treated together for best results
6. What “no one size fits all” really means in thyroid medication and dosing
7. Why treating symptoms alongside labs can restore quality of life
8. How thyroid support can become the foundation that makes lifestyle change possible
9. Why patients deserve to feel well in every season of life, including perimenopause and menopause
10. How Modern Thyroid Clinic approaches education, empowerment, and individualized care

Featured Clinicians

Brandy Valentino, RN, WHNP, CNM

Brandy shares her path from labor and delivery and midwifery into thyroid care, including how questioning cookie-cutter algorithms led her to a more personalized, patient-centered approach.

Jessica Strauss, DNP, FNP-C

Jessica explains how her own symptoms and years of being dismissed shaped her approach to care, and why she is passionate about full thyroid evaluation, belief in patient symptoms, and restoring hope.

Krystal Adams, MSN, FNP-BC, LSO

Krystal describes her prevention-focused background, her love of hormone care, and how combining hormone and thyroid optimization can help patients finally feel normal again.

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What if GLP-1 medications work best not at higher doses, but with slower, personalized microdosing?

In this solo Ask Me Anything episode of Modern Thyroid and Wellness, McCall McPherson answers your most pressing questions about GLP-1 medications. Drawing from clinical experience and current research, she breaks down how these medications actually work, why microdosing matters, and how to minimize side effects while protecting metabolism, muscle, and long-term health.

McCall explores the connection between GLP-1s and inflammation, thyroid function, fertility, cancer risk, longevity, and metabolic recovery. She also explains when patients may need long-term therapy, how to successfully come off these medications, and why slow, personalized dosing produces the safest and most sustainable results.

If you’ve heard conflicting information about GLP-1s, this episode offers clarity, context, and a clinically grounded perspective on how to use them wisely.

Key Topics Covered

1. What GLP-1 medications are and how they work beyond appetite suppression
2. Why microdosing leads to better outcomes and fewer side effects
3. The real cause of most GLP-1 side effects: rapid weight loss and under-fueling
4. Semaglutide vs. tirzepatide and how to choose the right option
5. Why most patients do not need to stay on GLP-1s forever
6. How improving insulin sensitivity and leptin resistance supports long-term weight maintenance
7. When long-term GLP-1 use may be appropriate, especially for chronic inflammation
8. Strategies for tapering off successfully, including slow dose reduction and metabolic support
9. The relationship between GLP-1s and thyroid function, Hashimoto’s antibodies, and medication adjustments
10. Pregnancy, fertility, and breastfeeding recommendations
11. Why weight loss timelines vary based on thyroid health and metabolic status
12. The role of treatment breaks in maintaining medication effectiveness

GLP-1 Benefits You May Not Know About

1. Powerful anti-inflammatory effects through multiple biological pathways
2. Reduced risk of several cancers, including breast, lung, colorectal, and pancreatic
3. Lower risk of major cardiovascular events such as heart attack and stroke
4. Reduced all-cause mortality by approximately 15–20%
5. Improvements in metabolic health, blood sugar control, and insulin sensitivity
6. Potential benefits for compulsive behaviors, cravings, and addiction patterns

Common Concerns Addressed

Hair loss and muscle loss

Usually caused by rapid weight loss or inadequate protein and nutrient intake, not the medication itself.

Thyroid cancer risk

Human studies have not shown an increased risk for common thyroid cancers. GLP-1s should be avoided only in patients with a history of medullary thyroid carcinoma or MEN syndromes.

Thyroid medication changes

Weight loss and metabolic shifts often require dose adjustments over time.

Lifestyle Strategies That Support Success

1. Prioritize strength training to preserve muscle and metabolic rate
2. Focus on adequate protein and micronutrient intake
3. Avoid aggressive calorie restriction
4. Incorporate walking and low-stress movement
5. Address thyroid optimization and metabolic health before expecting rapid results

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What if the answers to chronic illness are often missed because medicine focuses on symptoms instead of root causes?

In this deeply personal and powerful episode of Modern Thyroid and Wellness, McCall McPherson welcomes Dr. Aaron Hartman, functional medicine physician, clinical researcher, and author of UnCurable: From Hopeless Diagnosis to Defying All Odds. Dr. Hartman shares how his daughter’s complex medical challenges transformed his understanding of healthcare, pushing him beyond conventional medicine and into a root-cause, patient-centered approach.

The conversation explores medical blind spots, medical gaslighting, and the limitations of symptom-focused care. Dr. Hartman explains why chronic illness often requires patients to become active participants in their health journey and how functional medicine can help uncover overlooked root causes. He also discusses environmental toxins, tick-borne illness, mold exposure, hypermobility syndromes, and the importance of personalized care strategies.

This episode offers hope, validation, and practical insight for anyone who has felt dismissed, misunderstood, or stuck searching for answers.

Episode Highlights

1. Dr. Hartman’s journey from conventional medicine to functional medicine through his daughter’s health challenges
2. The concept of medical blind spots and how healthcare recommendations evolve over time
3. Why chronic illness often requires individualized and investigative care
4. Understanding medical gaslighting and why patients, especially women, are frequently dismissed
5. How the healthcare system prioritizes acute care over chronic disease prevention and management
6. Why patients must become the “CEO” of their own health
7. The importance of building a collaborative healthcare team
8. Environmental and chronic illness drivers including mold exposure, Lyme disease, and bio-toxin illness
9. The connection between hypermobility, autoimmune conditions, neurodivergence, and chronic health symptoms
10. The role of lifestyle fundamentals including nutrition, sleep, environment, and relationships in healing
11. How faith, resilience, and patient-provider trust influence recovery and health outcomes
12. Why listening to patients is often the most powerful diagnostic tool in medicine
13. How education empowers patients to make informed healthcare decisions
14. Why modern medicine requires balancing conventional and functional approaches

In This Episode, You Will Learn

1. Why chronic illness often exists in gaps between medical specialties
2. How conventional medicine can miss environmental, infectious, and systemic contributors to illness
3. The importance of detailed patient history and long-term provider relationships
4. How environmental toxins and water-damaged buildings can contribute to chronic inflammation
5. Why tick-borne illnesses may be significantly underdiagnosed
6. The connection between hypermobility syndromes and complex chronic illness patterns
7. How medical culture and time constraints can unintentionally limit patient care
8. Why early dismissal of symptoms can delay diagnoses by years
9. The importance of patient education and proactive health ownership
10. How foundational health practices often provide the strongest healing support

About Dr. Aaron Hartman:

Dr. Aaron Hartman is a functional medicine physician, clinical researcher, and founder of the Virginia Research Center. He has participated in over 70 clinical research studies and serves as an Assistant Clinical Professor at Virginia Commonwealth University (VCU).

His work focuses on helping patients identify lifestyle and environmental leverage points that support the body’s natural ability to heal. His book, UnCurable, shares his family’s journey navigating chronic illness while providing practical strategies for patients seeking answers beyond conventional care.

📖 About UnCurable

UnCurable blends memoir and medicine, weaving personal family experience with decades of clinical insight. It challenges conventional models of chronic illness and empowers patients to pursue healing through personalized, root cause focused care.

Discover the book:

1. 📘 Amazon: UnCurable: From Hopeless Diagnosis to Defying All Odds
2. 🎧 Audible: https://www.audible.com/pd/UnCurable-Audiobook/B0G4NNPSF2?srsltid=AfmBOoqovf36lmHnQPTbTM9YhGlzJ40P8kCAnzrGjXknVrygXQ7az_y4

Follow Dr. Aaron Hartman and Richmond Integrative & Functional Medicine

Website: https://richmondfunctionalmedicine.com/

YouTube: @AaronHartmanMD

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What if the reason thyroid eye disease feels so confusing is because it requires more than one specialist to treat it well?

In this episode of Modern Thyroid and Wellness, host McCall McPherson sits down with Dr. Sean Paul, a board-certified oculoplastic and orbital surgeon based in Austin, Texas, to explore thyroid eye disease (TED) from diagnosis through advanced treatment.

Dr. Paul explains what thyroid eye disease really is, why it is often underdiagnosed, and how it impacts both vision and quality of life. The conversation covers medical therapy, biologic treatments like Tepezza (teprotumumab), surgical options, and the importance of a multidisciplinary approach. They also discuss emerging trends in aesthetic and reconstructive eye surgery, regenerative skin treatments, and why long-term maintenance and skin health matter just as much as procedures.

This episode offers clarity, hope, and practical guidance for anyone struggling with thyroid eye disease, Graves’ disease, or eye changes related to autoimmune thyroid conditions.

👤 About the Guest: Dr. Sean Paul

Dr. Sean Paul is a fellowship-trained oculoplastic and orbital surgeon and the founder of Austin Face and Body. He completed medical school in San Antonio and trained extensively in ophthalmology and oculoplastic surgery, with early experience in reconstructive eye surgery at Brooke Army Medical Center during Operation Iraqi Freedom.

Dr. Paul specializes in thyroid eye disease, orbital inflammation, eyelid reconstruction, and aesthetic facial surgery, blending functional restoration with natural-appearing cosmetic outcomes. His practice focuses on both medical necessity and patient confidence.

🔑 Key Topics Covered

1. What thyroid eye disease is and why it is an autoimmune orbital inflammatory condition
2. The connection between TED and Graves’ disease, hyperthyroidism, and hypothyroidism
3. Early and subtle symptoms of thyroid eye disease, including dryness, redness, eyelid asymmetry, and double vision
4. Why thyroid eye disease is frequently underdiagnosed
5. The difference between active inflammatory disease and “quiet” or chronic disease
6. The emotional and social impact of eye changes in Graves’ disease
7. How oculoplastic and orbital surgeons are trained and what makes them different from general ophthalmologists
8. Medical treatment options including steroids, radiation, and biologic therapy
9. Tepezza (teprotumumab): how it works, how it is administered, and potential side effects including hearing changes
10. Surgical options for thyroid eye disease:
11. Orbital decompression (fat and bone)
12. Strabismus (eye muscle) surgery
13. Eyelid retraction repair
14. Typical recovery timelines and why disease stability matters before surgery
15. The role of inflammation control, thyroid antibodies, and IGF-1 receptor pathways
16. Cosmetic and reconstructive trends in eyelid and facial surgery
17. Why “natural” results and long-term maintenance are now the standard
18. The growing role of regenerative treatments, lasers, and skin health in facial rejuvenation

🧠 Important Medical Clarifications (Fact-Checked)

1. The biologic medication discussed is Tepezza (teprotumumab), not “Topaz”
2. Tepezza targets the IGF-1 receptor, a key pathway involved in thyroid eye disease inflammation
3. Tepezza is administered intravenously over a structured infusion schedule
4. Hearing changes are a known side effect and require monitoring
5. Orbital decompression may be urgent if the optic nerve is threatened
6. Surgery is ideally performed after 3–6 months of disease stability, unless vision is at risk

🌐 Where to Learn More

Practice Website:

🌐 https://www.austinfaceandbody.com

Instagram:

📸 https://www.instagram.com/austinfaceandbody

📸 https://www.instagram.com/drseanpaul

📍 Locations: Austin, Westlake, Downtown Austin, Round Rock

💻 Virtual consultations available

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What if healthspan is not about adding more years to life, but protecting strength, energy, and independence as you age?

What if the real goal is not just living longer, but staying strong, capable, and energized for decades? In this episode, McCall sits down with Dr. Chris Renna, DO, founder of LifeSpan Medicine, to explore what healthspan really means and why most people start seeking answers only after symptoms have already taken hold.

Dr. Renna shares why he shifted from managing diagnoses to building true patient partnerships, and how consistent rhythms in sleep, food, movement, and perspective can change the way you feel day to day. They also discuss practical exercise targets, the role of gratitude and boundaries, and a fascinating look at emerging longevity therapies that may become far more common in the years ahead.

Key Discussion Points

1. Why Dr. Renna moved from disease management to preventive and longevity-focused care
2. Breaking the doctor-patient hierarchy so patients have agency and ownership
3. The most common goal he hears in practice: more energy
4. Why the body thrives on rhythm: consistent meals, sleep, movement, and mindset
5. A practical framework: work, family, self-care, and learning to say a kind “no”
6. Healthspan defined: maintaining function over time, not just extending years
7. Why strength training matters now if you want freedom later
8. Cardio basics vs improving VO2 max, including when high intensity intervals make sense
9. The “100th birthday” vision: driving yourself there, walking in strong, living fully
10. Longevity tools discussed: vitamin D, omega-3s, multivitamins, and beyond
11. Emerging therapies: plasmapheresis (therapeutic plasma exchange), EBO2, exosomes, stem cell trends, and hyperbaric oxygen
12. What may be next: wearables that coach in real time and more personalized longevity guidance

Some Questions We Explore

1. Why do so many people feel like they are doing “everything right” but still feel exhausted?
2. What does “healthspan” look like in real life, and how do we measure it?
3. How much exercise is enough if you are busy, tired, and already stretched thin?
4. What habits protect your energy most: food, movement, sleep, or mindset?
5. Which longevity therapies are promising, and which are still evolving?
6. What might preventive medicine look like in 10 years?

About the Guest

Dr. Chris Renna, DO is the founder of LifeSpan Medicine, a preventive and longevity-focused practice designed to help people prevent disease, resolve symptoms, and improve long-term health through personalized concierge support and follow-up. He is a published author and speaker with decades of experience in preventive medicine and health optimization.

Resources

1. LifeSpan Medicine: https://www.lifespanmedicine.com/

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What if insulin resistance is quietly driving inflammation, weight gain, and thyroid dysfunction years before blood sugar ever looks abnormal?

In this episode of Modern Thyroid and Wellness, McCall McPherson sits down with endocrinologist Dr. Alessia Roehnelt for an in-depth discussion on insulin resistance and why it is one of the most important predictors of long-term health outcomes.

Dr. Roehnelt explains how insulin functions in the body, what happens when insulin resistance develops, and why chronically elevated insulin drives inflammation, weight gain, metabolic dysfunction, and disease progression. The conversation highlights the strong bidirectional relationship between insulin resistance and thyroid dysfunction, including how each can worsen the other when left unaddressed.

Together, they explore early warning signs of insulin resistance, optimal lab markers, lifestyle interventions, and when medications like metformin or GLP-1 agonists may be appropriate. This episode emphasizes early detection, individualized care, and the importance of addressing inflammation to restore metabolic health.

🔑 Key Topics Covered

1. What insulin resistance is and how it develops over time
2. How insulin drives inflammation and impacts every organ system
3. Why insulin resistance often precedes prediabetes and type 2 diabetes
4. Common physical signs of insulin resistance, including acanthosis nigricans
5. Rapid weight fluctuations and carb sensitivity as hallmark symptoms
6. The bidirectional relationship between insulin resistance and hypothyroidism
7. How insulin resistance affects thyroid hormone absorption and conversion
8. Why insulin is often a better early marker than hemoglobin A1c
9. Optimal vs. “normal” lab ranges for fasting glucose, insulin, and A1c
10. Why lab reference ranges shift with population health trends
11. The role of vitamin D as both a vitamin and hormone in metabolic health

🧪 Labs & Metrics Discussed

1. Fasting insulin (ideally low with normal glucose)
2. Fasting blood glucose (optimal range below the high 90s)
3. Hemoglobin A1c for long-term glucose trends
4. Liver enzymes (AST, ALT) and their link to fatty liver
5. Thyroid function tests and thyroid antibodies
6. Vitamin D levels and their systemic impact

🏃‍♀️ Lifestyle Strategies for Improving Insulin Sensitivity

1. Prioritizing adequate, consistent sleep to lower cortisol
2. Strength and resistance training to improve insulin sensitivity
3. Reducing refined carbohydrates and nutrient-poor starches
4. Pairing carbohydrates with protein and fat to blunt insulin spikes
5. Using continuous glucose monitors to identify personal triggers
6. Strategic use of intermittent fasting for appropriate candidates

💊 Medications Discussed

1. Metformin
2. Improves insulin sensitivity
3. Long-standing safety profile
4. Cost-effective option for early intervention
5. GLP-1 receptor agonists
6. Reduce appetite and gastric emptying rate
7. Lower liver glucose production
8. Improve inflammation and insulin signaling
9. Potential benefits for autoimmune and inflammatory conditions

🌿 Key Takeaways

1. Insulin resistance is reversible when caught early
2. “Normal” lab values are not always optimal
3. Weight gain is not simply calories in vs. calories out
4. Inflammation is the common thread linking insulin, thyroid disease, and autoimmunity
5. Personalized, whole-body evaluation leads to better long-term outcomes
6. Advocacy and early intervention can dramatically change health trajectories

📍 Where to Find the Guest

• Website & Practice

🔗 https://www.endohealthdoc.com — Dr. Roehnelt’s endocrinology and metabolic health practice

• Instagram

🔗 https://www.instagram.com/endohealthdoc/?hl=en — EndoHealthDoc on Instagram

• Facebook

🔗 https://www.facebook.com/alessia.roehnelt— Dr. Roehnelt’s Facebook reels and clips

📲 Follow McCall McPherson & Modern Thyroid and Wellness

💻 Website: modernthyroidclinic.com

🐦 X / Twitter: @thyroidexpert

🌐 Host Website: mccallmcpherson.com

📺 YouTube: McCall McPherson Channel

📘 Facebook: McCall McPherson PAC

📸 Instagram: @mccallmcphersonpa

What if the future of weight care is not about losing pounds, but about supporting metabolic health, nourishment, and sustainability?

In this episode of Modern Thyroid and Wellness, host McCall McPherson sits down with Ashley Koff, registered dietitian, entrepreneur, and author of the upcoming book Your Best Shot. Together, they unpack the rapidly evolving conversation around GLP-1 hormones, GLP-1 agonist medications, and what true weight health really means.

Ashley brings a balanced, evidence-informed perspective to a topic often dominated by extremes. She explains the science behind GLP-1s, clarifies common misconceptions, and emphasizes why medications alone are never the full solution. This conversation centers on personalized nutrition, comprehensive assessment, and moving away from diet culture toward sustainable, root-cause care.

🔑 Key Topics Covered

1. What GLP-1 hormones are and how they function in the body
2. How GLP-1 agonist medications work and what they do and do not address
3. The difference between weight loss and weight health
4. Why metabolism, muscle, gut health, and nutrient status matter
5. Common pitfalls of relying solely on medication for weight management
6. The importance of comprehensive health assessments before and during GLP-1 use
7. How diet culture oversimplifies weight and wellbeing
8. Why personalized nutrition is essential for long-term success
9. Supporting metabolic health without shame, restriction, or extremes

💡 In This Episode, You Will Learn

1. Why GLP-1 medications are tools, not cures
2. How weight health differs from scale-based outcomes
3. What people often overlook when starting GLP-1 therapy
4. Why nutrition adequacy and protein intake are critical
5. How to protect muscle mass and metabolic function
6. The role of individualized care in sustainable weight outcomes
7. Why one-size-fits-all approaches fail most people

🎯 Episode Takeaways

1. Weight health is about function, not just numbers
2. GLP-1 medications can be helpful, but only within a comprehensive care plan
3. Nutrition, movement, sleep, and stress all shape metabolic outcomes
4. Sustainable health requires personalization, not diet rules
5. Long-term wellbeing comes from addressing root causes, not chasing quick fixes

📘 About the Guest

Ashley Koff, RD, is a nationally recognized nutrition expert, entrepreneur, and founder of The Better Nutrition Program. She specializes in personalized nutrition, weight health, and helping individuals move beyond diet culture toward sustainable wellbeing. Ashley is the author of the upcoming book Your Best Shot, which explores a smarter, more human approach to weight and health.

Connect with Ashley Koff:

🌐 Website: https://thebetternutritionprogram.com/about/

💼 LinkedIn: https://www.linkedin.com/in/ashley-koff/

📲 Follow McCall McPherson & Modern Thyroid and Wellness

💻 Website: modernthyroidclinic.com

🐦 X / Twitter: @thyroidexpert

🌐 Host Website: mccallmcpherson.com

📺 YouTube: McCall McPherson Channel

📘 Facebook: McCall McPherson PAC

📸 Instagram: @mccallmcphersonpa