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    Fitness

    The Root Cause Medicine Podcast

    In each episode, we’ll meet renowned medical experts, specialists and pioneers who’ve influenced the way certain conditions and diseases are understood and treated. We focus on giving you the information you need to understand the root cause, symptoms and treatments available for specific medical conditions.

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    Copyright: © 2024 Rupa Health

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    Latest Episodes:
    Dr. Cheng Ruan on Physician Burnout, AI, and the Next Decade of Healthcare Apr 23, 2026
    Show notes

    Dr. Cheng Ruan is a fascinating physician on the leading edge of medicine, and in this episode we explore his story, how he thinks, and what he sees coming next in healthcare. What I loved most about this conversation is how it expands the way we think about practicing medicine - beyond protocols and productivity into something more human and sustainable. While we touch on integrative care, insurance models, and AI, the deeper thread is that physicians are being asked to evolve - not just clinically, but personally and systemically. Dr. Ruan reminds us that care isn’t just about what we prescribe, but how we listen, communicate, and design the environments we work in. It’s an invitation to step back and ask: what kind of medicine are we building, and does it truly support both our patients and ourselves?


    Guest Introduction

    Dr. Cheng Ruan, MD, is the founder of the Texas Center for Lifestyle Medicine, an integrative, insurance-based practice focused on chronic disease, mind-body medicine, and personalized care. He is also the co-founder of the Physician Transformation Institute, where he works with clinicians to address burnout, reconnect with purpose, and explore new ways of practicing medicine. His work sits at the intersection of clinical care, systems design, and emerging technology.


    Key Moments from This Episode

    • From transactional to transformational care: Dr. Ruan shares a pivotal moment early in his career that led him to rethink the purpose of clinical practice and move toward a more patient-centered, root-cause approach.
    • Medicine as a system, not a set of diagnoses: He introduces the idea of viewing health through a systems-based “flowchart,” focusing on upstream drivers rather than isolated conditions.
    • Reframing physician burnout: The conversation shifts burnout from a workload issue to something deeper—touching on identity, alignment, and meaning in medicine.
    • Building an insurance-based integrative model: He walks through how he created a lifestyle medicine practice that operates within traditional reimbursement structures.
    • Group care as a tool for chronic disease: Dr. Ruan highlights how cohort-based care models may support patient engagement, accountability, and long-term behavior change.
    • AI as a support layer in clinical practice: The episode explores how AI can assist with education, workflows, and communication - while emphasizing the need for thoughtful implementation.
    • Digital twins and patient experience: He introduces the concept of clinician “digital twins” as a way to extend communication and improve access while maintaining consistency in care delivery.
    • Raising resilient kids in an uncertain world: The conversation closes on a personal note, focusing on how to support the next generation through emotional safety, curiosity, and critical thinking.


    Timestamps

    • 00:00 – Introduction to Dr. Cheng Ruan and his work
    • 02:29 – Early life and integrative medicine background
    • 05:21 – Systems thinking and reimagining clinical care
    • 09:20 – Behavioral observation and patient insight
    • 20:54 – Physician burnout and meaning in medicine
    • 24:31 – Community, retreats, and clinician support
    • 42:42 – AI in healthcare and patient communication
    • 47:40 – Safety considerations and AI guardrails
    • 58:16 – The future of medicine and education
    • 01:06:23 – Inside his clinical model and practice design


    Want to elevate your practice?

    This episode is sponsored by Fullscript, a comprehensive care delivery platform designed to support whole-person, integrative healthcare. Fullscript allows clinicians to streamline supplement dispensing, lab ordering, and patient education in one free, centralized system—helping reduce administrative burden while supporting clinical decision-making. For practitioners, Fullscript offers access to professional-grade supplements, evidence-informed protocols, and lab integrations that can support more efficient planning and follow-up. For patients, it provides a clear, organized way to receive recommendations, manage refills, and stay engaged in their care. The goal is not to replace clinical judgment, but to make it easier for clinicians to focus on what matters most: thoughtful, individualized patient care.


    Disclaimer

    The views expressed on this podcast are those of the hosts and the guests, and they don't necessarily reflect the views of Fullscript or any affiliated organizations. This podcast is for informational and educational purposes only, and it's not intended to be medical advice. For your safety, always check with your healthcare provider before making any changes to your healthcare routine.


    Citations

    • West CP, Dyrbye LN, Erwin PJ, Shanafelt TD. Interventions to prevent and reduce physician burnout: a systematic review and meta-analysis. Lancet. 2016;388(10057):2272-2281.
    • Zhang X, Li L, Zhang Q, Le LH, Wu Y. Physician Empathy in Doctor-Patient Communication: A Systematic Review. Health Commun. 2024 May;39(5):1027-1037. doi: 10.1080/10410236.2023.2201735. Epub 2023 Apr 16. PMID: 37062918.
    • Tang MY, Graham F, O'Donnell A, Beyer F, Richmond C, Dhami R, Sniehotta FF, Kaner EFS. Effectiveness of shared medical appointments delivered in primary care for improving health outcomes in patients with long-term conditions: a systematic review of randomised controlled trials. BMJ Open. 2024 Mar 7;14(3):e067252. doi: 10.1136/bmjopen-2022-067252. PMID: 38453205; PMCID: PMC10921542.



    Magnesium Answers with Dr. Robert Fredrickson Apr 02, 2026
    Show notes

    Magnesium is one of those nutrients clinicians think they understand—until they take a closer look. In this episode, we sit down with Dr. Robert Fredrickson, author of Magnesium Answers, to unpack why this foundational mineral continues to create confusion in modern practice. We explore the gap between what standard lab testing shows and what may be happening intracellularly, how lifestyle factors like stress may influence magnesium balance, and how to think more precisely about selecting the right form for the patient in front of you. This conversation is a reminder that advancing patient care isn’t always about adding more complexity—it’s about seeing the fundamentals more clearly.


    Clinical Takeaways from This Episode


    Why serum magnesium may not reflect total body or intracellular magnesium status

    • Serum magnesium represents a small fraction of total body stores, which may limit its utility as a standalone marker; intracellular measures like RBC magnesium may offer additional insight (NIH, 2022).


    Magnesium’s foundational role in ATP production and metabolic processes.

    • Magnesium is required as a cofactor in ATP synthesis and numerous enzymatic reactions, supporting energy metabolism and overall cellular function (Gröber et al., 2015).


    Magnesium as a cofactor in vitamin D metabolism and nutrient synergy.

    • Magnesium participates in multiple steps of vitamin D activation, highlighting the importance of evaluating nutrient interactions in clinical planning (Uwitonze & Razzaque, 2018).


    Guest Introduction

    Dr. Robert Fredrickson is a clinician, educator, and author of Magnesium Answers: Unlocking the Secrets of Magnesium. With a background in sports medicine and functional medicine, he focuses on helping clinicians better understand mineral balance, metabolic health, and evidence-informed supplementation strategies. He also works with Fullscript, supporting providers with clinical decision support and access to professional-grade supplements and nutraceuticals. Dr. Fredrickson also has his own podcast, the Fredrickson Health Show.


    FAQ

    Is serum magnesium a reliable marker for magnesium status?

    • Not always. Serum magnesium reflects a small percentage of total body magnesium
    • Intracellular markers, such as RBC magnesium, may provide additional context
    • Interpreting trends alongside clinical presentation may support decision-making (NIH, 2022)


    What factors may influence magnesium status in patients?

    • Dietary intake and food quality
    • Malabsorptive disorders like celiac and IBD
    • Alcohol intake
    • Insulin resistance or type 2 diabetes
    • Vitamin D deficiency (NIH, 2022)

    

    How does magnesium interact with vitamin D?

    • Magnesium acts as a cofactor in enzymes required for vitamin D metabolism
    • Inadequate magnesium status may influence how vitamin D is processed in the body (Uwitonze & Razzaque, 2018)


    Key Moments (Timestamps)

    • 00:00 – Why magnesium remains overlooked in modern clinical care
    • 02:20 – Dr. Fredrickson’s shift from sports medicine to functional medicine
    • 05:32 – Limitations of serum magnesium testing in clinical practice
    • 07:27 – Understanding intracellular magnesium and RBC testing
    • 09:51 – Magnesium’s role in ATP production and metabolic function
    • 13:25 – Dietary patterns, food quality, and nutrient density challenges
    • 15:55 – How to select the appropriate form of magnesium
    • 18:33 – Magnesium citrate and GI motility considerations, including GLP-1 support
    • 20:46 – Common clinical patterns associated with low magnesium status
    • 22:09 – Safety considerations and when to individualize magnesium use


    Sponsor Message

    This episode is sponsored by Fullscript, a comprehensive care delivery platform designed to support whole-person, integrative healthcare. Fullscript allows clinicians to streamline supplement dispensing, lab ordering, and patient education in one free, centralized system—helping reduce administrative burden while supporting clinical decision-making. For practitioners, Fullscript offers access to professional-grade supplements, evidence-informed protocols, and lab integrations that can support more efficient planning and follow-up. For patients, it provides a clear, organized way to receive recommendations, manage refills, and stay engaged in their care. The goal is not to replace clinical judgment, but to make it easier for clinicians to focus on what matters most: thoughtful, individualized patient care.


    Disclaimer

    The views expressed on this podcast are those of the hosts and guests and don’t necessarily reflect those of Fullscript or any affiliated organizations. This podcast is for informational and educational purposes only and is not intended to be medical advice. For your safety, always check with your doctor or healthcare provider before making changes to your health routine.


    Citations

    1. Gröber U, Schmidt J, Kisters K. Magnesium in Prevention and Therapy. Nutrients. 2015 Sep 23;7(9):8199-226. doi: 10.3390/nu7095388. PMID: 26404370; PMCID: PMC4586582.
    2. Rosanoff A, Weaver CM, Rude RK. Suboptimal magnesium status in the United States: are the health consequences underestimated? Nutr Rev. 2012 Mar;70(3):153-64. doi: 10.1111/j.1753-4887.2011.00465.x. Epub 2012 Feb 15. PMID: 22364157.
    3. Uwitonze AM, Razzaque MS. Role of Magnesium in Vitamin D Activation and Function. J Am Osteopath Assoc. 2018 Mar 1;118(3):181-189. doi: 10.7556/jaoa.2018.037. PMID: 29480918.
    4. National Institutes of Health. “Magnesium.” National Institutes of Health, 2022, ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/.



    Is the Hormonal Matrix the Missing Link for Your Patients? Mar 26, 2026
    Show notes

    What if the real problem with hormones isn’t what’s broken… but what’s being missed? In this conversation, Dr. Cheryl Burdette invites us to rethink everything we’ve been taught about hormonal health. Instead of chasing isolated lab values or treating systems in silos, she introduces a more useful question: what if hormones only make sense when you look at how they talk to each other? We explore the concept of the hormonal matrix—a lens that connects thyroid, adrenal, and reproductive hormones into one dynamic, interdependent network. Because in the body, nothing operates alone. Signals overlap. Pathways intersect. And small imbalances can ripple across systems in ways we don’t always measure. This systems-based perspective isn’t just philosophical—it’s increasingly supported by emerging research on the cross-talk between the HPTA axis, the gut, and broader metabolic and immune signaling. When you zoom out, patterns start to appear. And when you see the pattern, your clinical decisions can change. This episode is about shifting from fragments to frameworks—and why that shift may open up entirely new possibilities for understanding and supporting hormonal health.


    The Moringa Recall & Salmonella Outbreak: What Clinicians Need to Know Mar 19, 2026
    Show notes

    Are your patients putting Salmonella in their morning smoothie? That’s essentially what happened recently when people added what they believed was a safe, antioxidant-packed greens powder to their daily routine. The ingredient? Moringa. Moringa leaf powder is often marketed as a nutrient-dense botanical containing vitamins, minerals, antioxidants, and plant compounds that may support general wellness. For many people, it feels like an easy health habit: add a scoop to a smoothie and start the day feeling proactive about nutrition. But recently, moringa powder was linked to Salmonella infections that resulted in hospitalizations. In this episode, we chat through what clinicians needs to know to keep their clients safe.


    When Labels Lie: The St. John's Wort Report Mar 12, 2026
    Show notes

    A recent analysis of 22 St. John’s Wort supplements purchased online found that only one actually matched its label for the key compound hypericin. Several products contained little to none of the active ingredient, and some appeared to use synthetic dyes to mimic the color of hypericin, potentially misleading simple testing methods (Now, 2025). Why does this matter? Because when a supplement doesn’t contain the ingredient it claims, patients may not receive the support they expect. That can lead to wasted money, confusing clinical outcomes, and lost trust in integrative care. In this episode of the Root Cause Medicine Podcast, we’re joined by Dr. Eric Viegas, Medical Product Manager at Fullscript, to unpack what this report means for clinicians and patients. We discuss how ingredient discrepancies can happen—from plant sourcing and manufacturing to risks in online marketplaces—and how practitioners can help protect patients from misleading products. We also explore what clinicians should look for when choosing supplements, including validated testing methods, Certificates of Analysis, and quality standards that help ensure products contain what the label promises.


    Anyone Can Order Labs Now. Who’s Interpreting Them? Mar 05, 2026
    Show notes

    In this episode of the Root Cause Medicine Podcast, we explore a growing clinical reality: patients now have immediate access to advanced bloodwork but not necessarily interpretation with a clinician. In this conversation, we introduce Fullscript Journeys, the provider-led answer to direct-to-consumer lab platforms. With lab testing, AI-supported interpretations and wellness plans, and seamless follow-ups, Journeys empowers providers to deliver a modern patient experience — without compromising clinical guidance.


    Building an Integrative Pharmacy Practice with Dr. Emlah Tubuo, PharmD Feb 19, 2026
    Show notes

    On this episode of Root Cause Medicine, we’re honored to share the story of Dr. Emlah Tubuo, PharmD, MS, an integrative pharmacist who came to the U.S. in 2003 with $300 in her wallet and built what many of us wish existed in every community: a pharmacy designed around whole person care. Dr. Emlah explains how growing up around infectious disease in Cameroon shaped her prevention-first mindset, and how arriving in the U.S. revealed a different challenge: chronic disease that silently progresses for years before symptoms demand urgent intervention.


    Is Creatine Safe for Kids? What Parents and Practitioners Should Know Feb 12, 2026
    Show notes

    Creatine is one of the most extensively researched nutrients in sports, metabolic, and brain health, yet parents and practitioners alike have questions about its use in children and adolescents. In this episode, Dr. Kate Kresge speaks with Jeff Gladd, MD, Chief Medical Officer at Fullscript, to clarify how creatine functions in normal physiology, what the research shows about pediatric safety, and how clinicians can guide families with confidence. Together, they explore growth-related energy needs and practical clinical considerations—offering an evidence-informed framework for responsible conversations about creatine use in youth.


    Ashwagandha & Liver Injury: What Clinicians Need to Know with Dr Eric Viegas Feb 05, 2026
    Show notes

    In this Root Cause Medicine podcast episode, we explore emerging concerns around ashwagandha-associated drug-induced liver injury (DILI). While ashwagandha remains one of the most widely used adaptogens in integrative medicine, recent international case reports have highlighted rare but clinically meaningful hepatic adverse events. This episode equips clinicians with a mechanistic understanding of potential risk factors, extraction methods that may increase vulnerability, and practical strategies for patient screening, education, and monitoring—without dismissing the therapeutic value of this foundational herb.


    Voice Disorders & Chronic Cough: Integrative Approaches With Dr. Linda Dahl, MD — Integrative Otolaryngologist & Voice Specialist Jan 29, 2026
    Show notes

    Nearly one in three adults will experience a voice disorder at some point in their lifetime, often without realizing it may be connected to their overall health (Stachler et al., 2018). In this episode, we sit down with integrative otolaryngologist Dr. Linda Dahl to unpack how subtle changes in vocal tone, stamina, and clarity can serve as early clues to what’s happening systemically - from inflammation and hormonal shifts to nervous system stress, reflux, and microbiome changes - and what to do next depending on what you hear. From simple in-office listening strategies and targeted questions to appropriate referrals, lab considerations, and integrative support options, this episode helps clinicians effectively resolve common voice issues using a whole person approach.


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