The Root Cause Medicine Podcast

New research is raising important clinical questions about the long-term effects of GLP-1 receptor agonist therapy during significant weight loss. A recent five-year observational study reported associations between GLP-1 use and higher rates of osteoporosis, osteomalacia, and gout in some adults with obesity and type 2 diabetes, particularly in the setting of rapid weight reduction (Wajahath et al., 2026). While GLP-1 therapies may support glycemic control, cardiometabolic health, and surgical outcomes, these findings highlight the importance of proactive monitoring and individualized patient support. In this episode, we explore practical clinical considerations, including:How clinicians may approach bone health monitoring more proactively during significant weight lossWhich patients may warrant closer nutritional or musculoskeletal assessmentSymptoms that may merit further evaluation during GLP-1 therapy, including fatigue, weakness, diffuse bone pain, or mobility-related concerns We also discuss another emerging area of research: the role of exercise in mental health care. Drawing from a large umbrella review involving nearly 80,000 participants, we examine how aerobic exercise, walking, resistance training, and group-based movement may support depression and anxiety outcomes when implemented consistently and tailored to patient capacity (Munro et al., 2026). This conversation focuses on practical, evidence-informed strategies clinicians can integrate into care plans immediately - from resistance training and hydration strategies to helping patients build sustainable movement habits during periods of stress, fatigue, or overwhelm. Clinical Takeaways From This EpisodeRapid weight loss may increase the need for nutritional and musculoskeletal support: Emerging observational evidence suggests GLP-1 therapy during significant weight loss may be associated with higher rates of bone- and uric acid-related complications in some patients, highlighting the importance of muscle preservation, hydration, and nutritional status monitoring (Wajahath et al., 2026).Some musculoskeletal symptoms may warrant additional evaluation: Fatigue, weakness, diffuse bone discomfort, and mobility changes may justify further clinical assessment in patients experiencing rapid weight loss or reduced nutritional intake (Wajahath et al., 2026).Exercise may support both mental and metabolic health: Research suggests moderate-intensity aerobic exercise, resistance training, walking, and group movement may support mood, resilience, and long-term metabolic health outcomes when patients can engage consistently over time (Munro et al., 2026). FAQDo GLP-1 medications affect bone health?Some emerging observational evidence suggests GLP-1 receptor agonist therapy may be associated with increased rates of osteoporosis and osteomalacia during rapid weight loss in certain populations. Additional research is still needed to better understand causality, mechanisms, and which patients may be at greatest risk (Wajahath et al., 2026). What labs may help clinicians monitor patients on GLP-1 therapy?This episode discusses clinical considerations that may include alkaline phosphatase, vitamin D, calcium, phosphate, parathyroid hormone (PTH), and other markers of bone or metabolic health when clinically appropriate and individualized to the patient context (Wajahath et al., 2026). Can exercise support anxiety and depression symptoms?Research suggests aerobic exercise, walking, resistance training, and mind-body movement practices may support improvements in mood and anxiety symptoms when practiced consistently over time as part of a comprehensive care plan (Munro et al., 2026). Timestamps00:00 — Clinical questions emerging around GLP-1 therapy and rapid weight loss03:00 — Osteomalacia symptoms that may overlap with fatigue and chronic pain presentations10:33 — Why rapid weight loss may influence gout risk in some patients15:29 — The large exercise and mental health review clinicians are discussing20:50 — How to help patients build sustainable movement habits 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 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. CitationsWajahath M, et al. GLP-1 Receptor Agonist Use Is Associated with Increased Risk of Osteoporosis, Gout, and Osteomalacia in Adults with Type 2 Diabetes and Obesity. 2026.Munro NR, Teague S, Somoray K, et al. Effect of exercise on depression and anxiety symptoms: systematic umbrella review with meta-meta-analysis. British Journal of Sports Medicine. 2026;60:590–599.

Transcribed - Published: 21 May 2026

Inside Mosaic Diagnostics: Clinical Applications of Organic Acids, Environmental, and Microbiome Testing What Is Mosaic Diagnostics and How Are Its Lab Tests Used in Clinical Practice? In this episode, Dr. Kate Kresge speaks with Mosaic Diagnostics CEO Scott Mattivi and Chief Medical Officer Dr. Kurt Woeller to explore how specialty laboratory testing is used in functional and integrative medicine. Mosaic Diagnostics offers tests such as organic acids, environmental exposure biomarkers, and microbiome assessments, which may help clinicians evaluate complex, multi-system presentations. These tools are typically used as part of a systems-based clinical framework, supporting pattern recognition rather than serving as standalone diagnostic tests. The discussion also explores how clinicians interpret multi-system lab data, the role of practitioner education, and how emerging technologies—such as AI-assisted tools—may support clinical efficiency and decision-making. What Does Mosaic Diagnostics Test For? Mosaic Diagnostics provides specialty lab testing commonly used in integrative and functional medicine, including:Organic acids testing (OAT)Environmental toxin and mycotoxin testingMicrobiome and gastrointestinal assessmentsMetabolic and immune-related biomarkers These tests are designed to provide insight into biochemical pathways, microbial activity, and environmental exposures. Results are generally interpreted alongside clinical history, symptoms, and conventional labs to support individualized care. Key Clinical Insights What Is Organic Acids Testing (OAT)?Organic acids testing evaluates urinary metabolites involved in intermediary metabolism. It may provide insight into:Mitochondrial functionNutrient metabolism (e.g., B vitamins, amino acids)Oxidative stress patternsMicrobial activityWhen interpreted within clinical context, OAT may support identification of metabolic patterns and inform clinical hypotheses (Gallagher, 2018). What Does Environmental Toxin Testing Measure?Environmental exposure testing evaluates biomarkers associated with compounds such as:MycotoxinsHeavy metals (in some panels)Industrial chemicals These tests may help characterize exposure patterns, though interpretation can be complex due to variability in exposure timing, metabolism, and elimination. Clinical relevance should be assessed cautiously and within the broader evidence base (Warth, 2013; Owolabi, 2024). Clinical TakeawaysOrganic acids testing may offer a systems-level view of metabolism and support pattern recognition when interpreted in context (Gallagher, 2018).Environmental testing may help identify exposure patterns, though clinical actionability varies (Warth, 2013; Owolabi, 2024).Specialty lab testing is most effective when used to evaluate patterns across systems, rather than isolated biomarkers.Practitioner education plays a key role in appropriate interpretation and application of these tests.AI tools may enhance data interpretation and workflow efficiency but should be used alongside clinical expertise. Who Should Listen to This Episode?This episode is designed for healthcare providers who:Use or are considering functional or integrative lab testingWork with complex, chronic, or multi-system conditionsWant to better understand organic acids testing or mycotoxin testingAre interested in clinical data interpretation strategiesAre exploring AI tools in clinical practice FAQ: Mosaic Diagnostics and Specialty Lab Testing What Is Mosaic Diagnostics Known For?Mosaic Diagnostics is known for specialty laboratory testing used in functional and integrative medicine, including organic acids testing, environmental exposure assessments, and microbiome analysis. Timestamps00:00 – Introduction to Mosaic Diagnostics03:22 – Origins of organic acids testing08:26 – Expansion into environmental and microbiome testing23:41 – Environmental exposures and clinical applications31:57 – Overview of testing portfolio42:09 – Organic acids testing in practice47:41 – Innovation and AI in clinical workflows Sponsor SectionThis 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. DisclaimerThe 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 health care provider before making any changes to your health care routine. CitationsGallagher RC, Pollard L, Scott AI, Huguenin S, Goodman S, Sun Q; ACMG Biochemical Genetics Subcommittee of the Laboratory Quality Assurance Committee. Laboratory analysis of organic acids, 2018 update: a technical standard of the American College of Medical Genetics and Genomics (ACMG). Genet Med. 2018 Jul;20(7):683-691. doi: 10.1038/gim.2018.45. Epub 2018 Mar 15. PMID: 29543224.Warth B, Sulyok M, Krska R. LC-MS/MS-based multibiomarker approaches for the assessment of human exposure to mycotoxins. Anal Bioanal Chem. 2013 Jul;405(17):5687-95. doi: 10.1007/s00216-013-7011-1. Epub 2013 Jun 18. PMID: 23774829; PMCID: PMC3695324.Owolabi, Iyiola & Siwarak, Kawisara & Greer, Brett & Rajkovic, Andreja & Dall’asta, Chiara & Karoonuthaisiri, Nitsara & Uawisetwathana, Umaporn & Elliott, Christopher & Petchkongkaew, Awanwee. (2023). Applications of Mycotoxin Biomarkers in Human Biomonitoring for Exposome-Health Studies: Past, Present, and Future. Exposure and Health. 16. 1-23. 10.1007/s12403-023-00595-4. Muñoz JP, Bleak TC, Calaf GM. Glyphosate and the key characteristics of an endocrine disruptor: A review. Chemosphere. 2021 May;270:128619. doi: 10.1016/j.chemosphere.2020.128619. Epub 2020 Oct 19. PMID: 33131751.

Transcribed - Published: 14 May 2026

When OCD, anxiety, or food restriction appears overnight in a child, that’s a different clinical problem—and it requires a different lens. In this episode, we sit down with Dr. Lindsey Wells to walk through how to recognize and approach PANS and PANDAS in practice. We focus on the hallmark presentation: abrupt-onset neuropsychiatric symptoms, often with a clear “before and after” that families can describe in detail. From there, the conversation shifts to what may be driving that change—whether that’s infection, immune activation, inflammation, or broader system vulnerability. We also get practical. What does an initial workup look like? How do you think about common triggers like strep or other infections? When do you stay with foundational labs versus expanding further? And how do you support families who are often dealing with a sudden and destabilizing shift in their child’s behavior? This episode is for clinicians who want a clearer, more grounded way to recognize PANS and PANDAS—and to start thinking through these cases without overcomplicating or overinterpreting limited evidence. Clinical Highlights: PANS/PANDASAbrupt-Onset OCD in Children: Sudden onset OCD, food restriction, or severe anxiety should immediately shift your differential toward PANS/PANDASClinical Diagnosis Over Lab Reliance: There is no confirmatory test—history, timing, and symptom clustering drive diagnosis (AAP, 2025)Infection–Immune Connection: PANDAS is associated with streptococcal infection, while PANS includes broader potential triggers (Swedo et al., 1998; AAP, 2025)Practical Lab Workup: Foundational labs (CBC, inflammatory markers, autoimmune screening, nutrients) can help inform clinical direction (Vitiello, 2026)Relapsing–Remitting Course: These conditions often follow a flare-based pattern, requiring longitudinal care planning (Johnson et al., 2019) Guest IntroductionDr. Lindsey Wells is a naturopathic physician specializing in pediatric PANS and PANDAS. Her clinical work focuses on identifying potential infectious and immune contributors to abrupt-onset neuropsychiatric symptoms while supporting long-term stabilization. She is also the author of Super Sam and the Battle Against PANS/PANDAS, a children’s book designed to help families, siblings, and educators better understand these conditions. FAQWhat is PANS? PANS (Pediatric Acute-onset Neuropsychiatric Syndrome) is defined by the sudden onset of OCD or severe food restriction, along with at least two additional neuropsychiatric symptoms such as anxiety, regression, tics, sleep disruption, or urinary changes. It is a clinical diagnosis without a disease-specific biomarker (AAP, 2025).What is PANDAS? PANDAS is a subset of PANS associated with group A streptococcal infection, characterized by abrupt-onset OCD and/or tics with a relapsing-remitting course linked to infection (Swedo et al., 1998).What causes sudden OCD in children? In some cases, abrupt-onset OCD may be associated with post-infectious immune activation or neuroinflammatory processes, although mechanisms remain under investigation (Snider & Swedo, 2004).How is PANS diagnosed? PANS is diagnosed clinically based on symptom onset, pattern, and exclusion of other neurologic or psychiatric conditions. Laboratory testing supports—but does not establish—the diagnosis (AAP, 2025).What labs should be considered? A phased approach may include CBC, inflammatory markers (CRP, ESR), metabolic panel, and autoimmune screening, with additional testing guided by presentation (Vitiello, 2026). Timestamps00:00 – PANS/PANDAS overview02:03 – How to explain PANS/PANDAS to families06:33 – What is PANS? What is PANDAS? Diagnostic criteria and symptom clusters 10:20 – Why PANS/PANDAS is often missed14:06 – How is PANS diagnosed?18:37 – What causes PANS/PANDAS? Infection triggers, immune response, and neuroinflammation explained24:55 – PANS/PANDAS treatment approaches: antimicrobials, anti-inflammatories, and symptom support27:11 – Using anti-inflammatory trials in PANS: when ibuprofen response may inform clinical direction34:02 – Can teens or adults have PANS/PANDAS?41:38 – Long-term management of PANS/PANDAS: preventing flares and supporting immune resilience Sponsor SectionThis 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. DisclaimerThe 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. CitationsAmerican Academy of Pediatrics. Pediatric Acute-Onset Neuropsychiatric Syndrome (PANS): Clinical Report. Pediatrics. 2025;155(3):e2024070334.Johnson M, Fernell E, Preda I, Wallin L, Fasth A, Gillberg C, Gillberg C. Paediatric acute-onset neuropsychiatric syndrome in children and adolescents: an observational cohort study. Lancet Child Adolesc Health. 2019 Mar;3(3):175-180. doi: 10.1016/S2352-4642(18)30404-8. Epub 2019 Jan 29. PMID: 30704875.Sigra S, Hesselmark E, Bejerot S. Treatment of PANDAS and PANS: a systematic review. Neurosci Biobehav Rev. 2018 Mar;86:51-65. doi: 10.1016/j.neubiorev.2018.01.001. Epub 2018 Jan 6. PMID: 29309797.Swedo SE, Leonard HL, Garvey M, et al. Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections: clinical description of the first 50 cases. Am J Psychiatry. 1998;155(2):264–271.Vitiello B. Clinical Utility of Medical Investigations in Pediatric Acute-Onset Neuropsychiatric Syndrome. JAMA Netw Open. 2026;9(3):e262624. doi:10.1001/jamanetworkopen.2026.2624Snider LA, Swedo SE. PANDAS: current status and directions for research. Mol Psychiatry. 2004 Oct;9(10):900-7. doi: 10.1038/sj.mp.4001542. PMID: 15241433.

Transcribed - Published: 7 May 2026

There’s a category of patients every clinician recognizes immediately.They’re exhausted.Their hair is thinning.They’re getting sick more often than they used to.Their focus isn’t what it was. And their labs?“Normal.” This episode is about what gets missed in that gap. We sit down with Lara Zakaria to discuss some of the least commonly tested for (but most commonly occuring) nutrient deficiencies that can help to explain symptoms like fatigue, hair loss, impaired immune function, and reduced resilience. We walk through how a structured nutrition panel combining familiar markers like CBC and iron studies with underutilized ones like vitamin B6, folate, zinc, and RBC magnesium can reveal patterns that standard interpretations often overlook. Because the future isn’t more testing - it’s running the right labs and using smarter interpretation to uncover what’s been hiding in plain sight. Clinical Takeaways from This EpisodePattern recognition is the clinical upgrade: Interpreting CBC, iron studies, and nutrient markers together - rather than in isolation - helps connect symptoms to physiology and identify contributing drivers earlier.Iron deficiency can exist before anemia: Hemoglobin is often a late marker; early depletion may only be visible through ferritin and iron transport patterns (Dhurde, 2025).Intracellular status matters:  Serum values alone may miss functional deficiencies—markers like RBC magnesium offer insight into cellular availability and physiologic demand (Razzaque, 2018).Underutilized nutrients complete the picture: Vitamin B6 and zinc play roles in neurotransmitter pathways, immune signaling, and metabolic function—but are rarely assessed together in standard workflows. Guest IntroductionDr. Lara Zakaria is an integrative pharmacist, nutritionist, and professor specializing in Functional Medicine and Personalized Nutrition. In addition to clinical practice and teaching, her work focuses on translating complex science—spanning nutrition, natural products, diagnostics, and health technology—into clear, clinically relevant frameworks that support education, implementation, and informed decision-making. You can sign up for the Journeys webinar series with Dr. Zakaria here.  FAQWhat types of symptoms should prompt nutrient testing? Fatigue, brain fog, hair loss, reduced exercise tolerance, and frequent illness are common presentations where nutrient patterns may play a role.Why isn’t hemoglobin enough to assess iron status? Hemoglobin changes occur later in the course of deficiency. Ferritin, transferrin saturation, and TIBC provide earlier insight into iron availability and storage (Dhurde, 2025).Why include markers like B6 and zinc? These nutrients are involved in neurotransmitter production, immune response, and metabolic pathways. They are often under-assessed but may contribute to overlapping symptom patterns.What’s the benefit of RBC magnesium vs serum magnesium? Serum magnesium reflects a small, tightly regulated portion of total body magnesium, while RBC magnesium offers a better proxy for intracellular status (Al Alawi, 2018). Timestamps02:36 – The new way to test for nutrient deficiencies03:55 – Building a smarter, structured nutrition panel10:54 – Vitamin D and why “adequate” isn’t always enough17:34 – Iron deficiency and early clinical clues24:43 – B vitamins and functional metabolism30:53 – Zinc: the overlooked but essential nutrient34:57 – Answering “Am I inflamed?” with data43:31 – Fatty acids and inflammation patterns48:33 – Making personalized care scalable and efficient 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. DisclaimerThe 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. We’ll catch you next time on the Root Cause Medicine Podcast. CitationsDhurde VS, Patel AB, Locks LM, Hibberd PL. Diagnostic performance of red cell indices in detecting iron deficiency and iron deficiency anemia among rural adolescent girls aged 14-19 years in Nagpur District. PLOS Glob Public Health. 2025 Sep 29;5(9):e0005108. doi: 10.1371/journal.pgph.0005108. PMID: 41021630; PMCID: PMC12478879. Chaudhry, H. S., & Kasarla, M. R. (2026). Microcytic hypochromic anemia. StatPearls. Retrieved March 31, 2026 from https://www.ncbi.nlm.nih.gov/books/NBK470252/Razzaque MS. Magnesium: Are We Consuming Enough? Nutrients. 2018 Dec 2;10(12):1863. doi: 10.3390/nu10121863. PMID: 30513803; PMCID: PMC6316205.Al Alawi AM, Majoni SW, Falhammar H. Magnesium and Human Health: Perspectives and Research Directions. Int J Endocrinol. 2018 Apr 16;2018:9041694. doi: 10.1155/2018/9041694. PMID: 29849626; PMCID: PMC5926493.

Transcribed - Published: 30 April 2026

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 IntroductionDr. 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 EpisodeFrom 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. Timestamps00:00 – Introduction to Dr. Cheng Ruan and his work02:29 – Early life and integrative medicine background05:21 – Systems thinking and reimagining clinical care09:20 – Behavioral observation and patient insight20:54 – Physician burnout and meaning in medicine24:31 – Community, retreats, and clinician support42:42 – AI in healthcare and patient communication47:40 – Safety considerations and AI guardrails58:16 – The future of medicine and education01:06:23 – 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. DisclaimerThe 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. CitationsWest 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.

Transcribed - Published: 23 April 2026

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 statusSerum 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 IntroductionDr. 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. FAQIs serum magnesium a reliable marker for magnesium status?Not always. Serum magnesium reflects a small percentage of total body magnesiumIntracellular markers, such as RBC magnesium, may provide additional contextInterpreting trends alongside clinical presentation may support decision-making (NIH, 2022) What factors may influence magnesium status in patients?Dietary intake and food qualityMalabsorptive disorders like celiac and IBDAlcohol intakeInsulin resistance or type 2 diabetesVitamin D deficiency (NIH, 2022)How does magnesium interact with vitamin D?Magnesium acts as a cofactor in enzymes required for vitamin D metabolismInadequate 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 care02:20 – Dr. Fredrickson’s shift from sports medicine to functional medicine05:32 – Limitations of serum magnesium testing in clinical practice07:27 – Understanding intracellular magnesium and RBC testing09:51 – Magnesium’s role in ATP production and metabolic function13:25 – Dietary patterns, food quality, and nutrient density challenges15:55 – How to select the appropriate form of magnesium18:33 – Magnesium citrate and GI motility considerations, including GLP-1 support20:46 – Common clinical patterns associated with low magnesium status22:09 – Safety considerations and when to individualize magnesium use Sponsor MessageThis 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. DisclaimerThe 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. CitationsGröber 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.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.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.National Institutes of Health. “Magnesium.” National Institutes of Health, 2022, ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/.

Transcribed - Published: 2 April 2026

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.

Transcribed - Published: 26 March 2026

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.

Transcribed - Published: 19 March 2026

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.

Transcribed - Published: 12 March 2026

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.

Transcribed - Published: 5 March 2026

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.

Transcribed - Published: 19 February 2026

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.

Transcribed - Published: 12 February 2026

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.

Transcribed - Published: 5 February 2026

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.

Transcribed - Published: 29 January 2026

In part two of our SIBO series, we’re joined again by Dr. Allison Siebecker to focus on what often determines whether patients stabilize or relapse: nutritional management and supportive care during and after SIBO treatment. We explore how to use prokinetics to support migrating motor complex function, when digestive aids like bile acids and enzymes may be appropriate, and how to apply SIBO dietary frameworks as personalized, flexible tools—not rigid rules. We also cover practical approaches to suspected yeast/dysbiosis overlap, how to support gut barrier integrity without worsening fermentation, and the key myths that can derail outcomes. This episode helps clinicians move from “eradication mode” to sustainable, integrative SIBO care.

Transcribed - Published: 22 January 2026

The research around SIBO is evolving, and 2026 has brought more subtypes, testing and treatment options than ever before. Our guest this week, Dr. Allison Siebecker, is an expert in conventional and natural approaches to SIBO, helped to open one of the first integrative SIBO centers in the nation, and frequently teaches physicians about how to effectively treat even the toughest cases of SIBO, ISO, IMO and more. Today, we explore how hydrogen, methane (IMO), and hydrogen sulfide–associated (ISO) pattern-typing can help us choose treatment options that help to decrease SIBO symptoms effectively. We discuss how impaired motility - particularly dysfunction of the migrating motor complex - can impact symptom persistence and relapse in addition to microbial type and load, and why we should address it in treatment plans. Dr. Siebecker also reviews the newest advances in SIBO testing, breath test interpretation, and how long to test depending on what you’re looking to discover. If SIBO has felt like a guessing game in your practice, or if you’re just looking to stay on the leading edge, this episode offers a clearer, physiology-driven framework grounded in education that will help your clients get and stay well.

Transcribed - Published: 15 January 2026

This episode of the Root Cause Medicine Podcast features host Dr. Kate Kresge, ND in conversation with Dr. Jeff Gladd, MD, Chief Medical Officer at Fullscript and an integrative primary care physician. Together, they unpack three timely topics for whole-person clinicians: emerging human data on urolithin A as a mitophagy-activating postbiotic that may support mitochondrial function and immune aging; how to help patients engage with the “fiber maxing” trend in a safe, sustainable way that supports metabolic health, GI function, and diet adherence; and a new industry survey showing that 94% of pharma leaders are running or exploring direct-to-patient (DTP) programs, with implications for GLP-1 therapy access, continuity of care, and the clinician’s central role in guiding treatment decisions. (Nature)

Transcribed - Published: 8 January 2026

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge is joined by Dr. Eric Viegas, a leader in supplement safety at Fullscript, for a timely and evidence-informed discussion on lead exposure in protein powders and nutritional supplements. Amid rising media attention and consumer concern, the conversation unpacks how and why trace amounts of lead can appear in supplements, how different regulatory thresholds (Prop 65 vs. USP/ICH) should be interpreted clinically, and what toxicologically relevant exposure actually means. Clinicians will gain practical insight into cumulative lead exposure, patient risk stratification, and how Fullscript is advancing supplement quality through enhanced testing, transparency, and practitioner-facing safeguards.

Transcribed - Published: 1 January 2026

In this “Health or Hype” rapid-fire episode, Dr. Kate Kresge teams up with Dr. Chris Sands, DPT, OCS, and Dr. Gabe Kresge, DPT, to sort running fact from fiction. They break down why strength training rarely “bulks up” runners and more often boosts efficiency, why single-leg strength better reflects the true demands of running than squats alone, and why minimalist shoes (and cushioning) should be chosen based on individual capacity and a gradual transition. They also address joint health—explaining why moderate, well-programmed running isn’t automatically “wear and tear”—and close with a practical prevention message: running assessments can catch issues before pain starts, and most injuries trace back to training load and under-recovery more than biomechanics.

Transcribed - Published: 18 December 2025

This episode of the Root Cause Medicine Podcast explores the Modern Running Assessment, an evidence-informed, data-driven framework for evaluating runners’ biomechanics, load tolerance, and performance capacity. Host Dr. Kate Kresge interviews Dr. Chris Sands, DPT, OCS, and Dr. Gabe Kresge, DPT, from Kinetic Physical Therapy to examine how modern tools—dynamometry, force plate testing, slow-motion gait analysis, cadence and vertical oscillation metrics, and single-leg endurance testing—provide objective information that visual observation alone may miss. These measurable insights help clinicians better understand strength-to-body-weight ratios, inter-limb asymmetries, foot-strike loading patterns, and fatigue-related movement changes, offering a clearer picture of the factors that may influence running efficiency, durability, and injury risk.

Transcribed - Published: 11 December 2025

We’re launching a new series that brings the insights that Fullscript Chief Medical Officer Dr. Jeff Gladd normally shares only with our internal team—now open to the entire integrative and functional medicine community. This month, Dr. Gladd breaks down three emerging clinical priorities with immediate relevance to whole-person care. He covers why the American College of Cardiology is now recommending high-sensitivity CRP (hs-CRP) for universal cardiovascular screening, how grip strength paired with BMI is outperforming traditional biomarkers in predicting metabolic decline and all-cause mortality risk, and what new evidence tells us about saffron as supportive care for patients experiencing SSRI-related sexual side effects.

Transcribed - Published: 4 December 2025

This episode features Dr. Neda Gioia, OD, CNS®, IFMCP, a pioneer in integrative eye care who blends optometry, clinical nutrition, and functional medicine to advance preventive vision strategies. Clinicians will learn how gut-eye axis mechanisms, AI-driven oculomics, sex-hormone transitions, and nutrient patterns influence ocular inflammation, retinal biomarkers, and whole-system health. Dr. Gioia illustrates how modern imaging (including emerging AI models), stool and hormone testing, and nutrient evaluation can support earlier identification of risk patterns and more personalized, prevention-forward care for patients across the lifespan.

Transcribed - Published: 20 November 2025

In this inspiring episode of the Root Cause Medicine Podcast, Dr. Kate Kresge welcomes Dr. Cynthia Libert, a board-certified family physician, functional medicine expert, and creator of The Joy Prescription. Together they explore the biochemistry of joy, how gratitude reshapes brain connectivity, and how positive emotion can help to modulate inflammation, support neuroplasticity, and protect cognitive health. Clinicians will learn practical ways to integrate “joy prescriptions” into patient care, using evidence-informed tools to foster resilience and prevent burnout.

Transcribed - Published: 13 November 2025

In this episode of The Root Cause Medicine Podcast, Dr. Kate Kresge interviews Dr. Chris Magryta and Dr. Erik Lundquist about Advanced Blood Labs 201—a course designed to help clinicians interpret metabolic and immune biomarkers across pediatric and adult populations. They explain how to use tests like C-peptide, adiponectin, leptin, and glutathione to identify early metabolic stress, and explore immune indices such as SII (Systemic Immune Inflammation Index) and SIRI (Systemic Inflammation Response Index) to uncover inflammation trends in both children and adults.

Transcribed - Published: 6 November 2025

James Greenblatt explores the evolving science of low-dose lithium as a neuroprotective intervention — highlighting its potential to prevent, slow, and even reverse cognitive decline associated with Alzheimer’s disease. He emphasizes that safe, nutritional lithium (2-10 mg) can support brain health by reducing neuroinflammation, promoting neuroregeneration, and stabilizing mood—without the risks associated with pharmaceutical doses. Clinicians are encouraged to assess lithium status through hair mineral analysis, monitor thyroid and kidney function, and consider environmental and dietary influences on endogenous lithium levels. By integrating low-dose lithium into a comprehensive, individualized care plan—including lifestyle modifications and targeted testing—practitioners can leverage this simple mineral to support mental clarity, impulsivity regulation, and long-term cognitive resilience.

Transcribed - Published: 30 October 2025

James Greenblatt explores the evolving science of low-dose lithium as a neuroprotective intervention — highlighting its potential to prevent, slow, and even reverse cognitive decline associated with Alzheimer’s disease. He emphasizes that safe, nutritional lithium (2-10 mg) can support brain health by reducing neuroinflammation, promoting neuroregeneration, and stabilizing mood—without the risks associated with pharmaceutical doses. Clinicians are encouraged to assess lithium status through hair mineral analysis, monitor thyroid and kidney function, and consider environmental and dietary influences on endogenous lithium levels. By integrating low-dose lithium into a comprehensive, individualized care plan—including lifestyle modifications and targeted testing—practitioners can leverage this simple mineral to support mental clarity, impulsivity regulation, and long-term cognitive resilience.

Transcribed - Published: 16 October 2025

True longevity requires metabolic flexibility, but how can we help our clients get there? This episode previews personalized metabolic health and longevity strategies from Dr. Rob Downey and Monique Class, presenters at Fullscript Forward 2025. Dr. Downey discusses how metabolic phenotyping, stress/HRV context, and GI patterns can inform evaluation, while Monique describes low-dose (microdosed) GLP-1 approaches, titration by response, and gradual tapering within lifestyle-first care model help them achieve impactful results for their clients. The conversation explores objective monitoring (labs, body composition), muscle-preserving movement, and structured workflows that may help patients sustain progress after medication changes. This episode is for informational and educational purposes only.

Transcribed - Published: 9 October 2025

This episode of The Root Cause Medicine Podcast explores how the 2025 GLP-1 prescribing advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association, and The Obesity Society can act as a catalyst for whole-person metabolic care—rather than just symptom management. Lara Zakaria, IFMCP, pharmacist and functional medicine practitioner, breaks down the new consensus guidelines and highlights opportunities to integrate nutrition counseling, strength training, and lab monitoring to support muscle preservation, nutrient adequacy, and patient safety. You’ll hear Lara’s practical approach—starting with screening for eating disorders and nutrient status before prescribing—and learn how to design workflows that make guideline implementation realistic in busy clinical settings. Providers will leave with evidence-informed strategies to improve patient outcomes, minimize side effects, and support sustainable behavior change around GLP-1 therapy.

Transcribed - Published: 2 October 2025

This episode of The Root Cause Medicine Podcast takes a deep dive into postpartum care—challenging the idea that one six-week checkup is enough. Serena Saeed-Winn, CNM, WHNP, IBCLC, shares how earlier postpartum visits may help identify concerns such as thyroid changes, support lactation comfort through therapeutic breast massage and lymphatic techniques, and guide gentle scar care for improved comfort and pelvic floor recovery. You’ll also hear insights on hormonal shifts, nutrient needs, and postpartum mental health considerations—plus practical strategies to engage partners and build collaborative care teams. Providers will leave with actionable, evidence-informed ideas to better support families during this critical transition.

Transcribed - Published: 25 September 2025

In this episode of The Root Cause Medicine Podcast, Dr. Kate Kresge welcomes Dr. Asare Christian, MD, a pain medicine and rehabilitation specialist, to explore the complex physiology of migraines and how a root-cause or functional medicine approach can transform treatment. They discuss the various triggers, including hormonal fluctuations, gut health, inflammation, and environmental toxins, as well as innovative natural therapies, supplements, and device options that empower patients to take control of their headache management. This conversation offers a comprehensive view of migraine care beyond conventional medications, emphasizing education, prevention, and personalized strategies for lasting relief.

Transcribed - Published: 18 September 2025

In this episode, Dr. Kate Kresge welcomes Dr. Christy Evans, an OB/GYN with a passion for functional women’s health. They discuss how pregnancy transforms every body system, the importance of a comprehensive lifespan approach to women's health, and the innovative methods Dr. Christy uses at Almond OB/GYN. She shares her journey from accountant to physician, the significance of addressing root causes behind common symptoms, and how holistic care can optimize vitality and long-term health. Plus, insights into postpartum recovery, PCOS, and practical strategies to support women at every stage of life.

Transcribed - Published: 11 September 2025

In this episode, Dr. Kate Kresge is joined by Dr. Ellen Vora to explore holistic approaches to anxiety beyond physiological root causes. They discuss how mindful movement, play, connection, and emotional regulation—such as cry therapy—can serve as powerful tools in managing true anxiety. Emphasizing the importance of integrating mind, body, and spirit, this conversation offers practical strategies for clinicians and individuals looking to deepen their understanding and treatment of anxiety.

Transcribed - Published: 4 September 2025

In this episode, Dr. Kate Kresge welcomes Dr. Eric Viegas back to discuss the often-overlooked details surrounding the quality and safety of omega-3 supplements. While omega-3s are celebrated for their benefits in cardiovascular health, inflammation, and cognition, contamination and oxidation can undermine their efficacy and even pose health risks. They explore the pivotal role of rigorous testing, manufacturing standards, and how practitioners can guide patients to choose high-quality, safe omega-3 products in a landscape filled with variable quality claims.

Transcribed - Published: 28 August 2025

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge interviews Kristin Oja, DNP, founder of STAT Wellness, one of the first clinics in the U.S. to combine functional medicine and movement under one roof. Kristin shares her remarkable journey from personal trainer to nurse practitioner to entrepreneur—growing STAT from backyard bootcamps into a thriving multi-location practice redefining modern healthcare. Kristin dives into why muscle mass is a vital sign, how data and personalization are at the heart of STAT’s model, and what it takes to build a clinic that truly supports patients and staff. From lab testing and team culture to scaling with integrity, this episode is both inspiring and tactical—especially for practitioners looking to chart their own course in functional medicine.

Transcribed - Published: 14 August 2025

In today's episode of The Root Cause Medicine Podcast, Dr. Kate Kresge dives into men's health, neurology, and fertility with Dr. Eric Yarnell. You’ll hear us discuss: 1. Testosterone and its impact on the male body 2. The dangers of relying on Internet medical information 3. Addressing male factors in infertility treatment 4. The role of herbal medicine in optimizing testosterone production 5. High testosterone and prostate conditions 6. How diet and gut health influence prostate health Dr. Eric Yarnell is the President of Northwest Naturopathic Urology, focusing on men's health, urology, and nephrology. He is also a Professor at Bastyr University in the Department of Botanical Medicine, alongside running two businesses in botanical medicine and publishing. He is the author of numerous texts and articles, including Natural Approach to Gastroenterology, Natural Approach to Urology, Natural Approach to Prostate Conditions, and Naturopathic Nephrology. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 31 July 2025

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge welcomes back Dr. Cheryl Burdette—naturopathic physician, educator, and founder of Precision Point Diagnostics—for a deep dive into one of the most evidence-backed biomarker bundles in functional medicine: the Gut, Oxidation & Stress panel. Dr. Burdette explains how ten underutilized but highly predictive biomarkers—including anti-LPS antibodies, zonulin, 8OHdG, F2-isoprostanes, glutathione, and more—can give clinicians a full-body snapshot of inflammation, leaky gut, immune dysregulation, and oxidative stress. She discusses how each marker ties into chronic conditions from cardiovascular disease to autoimmunity to neuroinflammation—and exactly how to intervene when these labs are out of range. This is a must-listen masterclass for any practitioner working with chronic illness, mystery symptoms, or “normal” labs that don’t tell the whole story. You’ll Hear Them Discuss: - Why LPS antibodies are one of the most predictive markers in medicine today - How oxidative stress contributes to cardiovascular disease, autoimmunity, and brain fog - What 8OHdG, zonulin, secretory IgA, and glutathione tell us about barrier integrity - The surprising links between gut dysfunction and GLP-1, mood, and immune balance - Case studies showing biomarker-guided interventions that worked - How to boost glutathione (and what forms work best) - When to re-test and what lab shifts to look for - Advanced testing for food sensitivity: IgG subclasses, complement, and tolerance vs. reactivity - Natural GLP-1 agonists, bitters, fiber, and bile as part of metabolic healing

Transcribed - Published: 25 July 2025

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge is joined by Dr. Jessica Christie, a licensed naturopathic doctor, clinical nutritionist, and integrative fertility expert, to discuss a diagnosis that frustrates both patients and practitioners: unexplained infertility. Dr. Christie explains that “unexplained” can sometimes mean “we haven’t found the root cause yet,” and she walks us through six of the most common hidden causes of fertility struggles—from subclinical hypothyroidism and nutrient deficiencies to autoimmune markers and environmental toxin exposure. Whether you’re a patient searching for answers or a practitioner looking for a more complete workup, this conversation offers evidence-based strategies, powerful case examples, and a hopeful message: unexplained doesn’t mean unsolvable. You’ll hear them discuss: - Why “unexplained infertility” is a diagnosis of exclusion—and what it often misses (Abdallah et al., 2020) - Six common, often-overlooked root-cause contributors to fertility struggles - How research links subclinical hypothyroidism with IVF success rates (Cho et al., 2015) - The immune markers linked to miscarriage and implantation failure (Demir et al., 2009; Shahbazi et al., 2019; Sauer et al., 2010; Jalilvand et al., 2023; Edassery et al., 2010) - Why gut and vaginal dysbiosis matter for egg quality and implantation (Patel et al., 2022; Tersigni et al., 2014; Blancafort & Llácer, 2023) - The micronutrients most essential for fertility—and most commonly deficient (Skoracka et al., 2021; Ji et al., 2023) - How to approach detoxing safely when trying to conceive (Jain & Singh, 2022; Pizzorno, 2017; NCCIH, 2019) - Real patient stories that show what’s possible with root-cause medicine

Transcribed - Published: 17 July 2025

In today's episode of The Root Cause Medicine Podcast, we're gonna go over what to do when your kid gets sick, including what to do, what not to do, and how you can address the top 25 acute childhood concerns using an integrative approach with Dr. Elisa Song. You’ll hear us discuss: 1. Integrative approaches to pediatric health 2. Post-antibiotic recovery for your kids 3. Engaging your vagus nerve to enhance your health 4. Breathing exercises for children 5. Homeopathy and natural remedies for children's health Dr. Elisa Song is a holistic pediatrician and pediatric functional medicine expert who has helped over 1,000 children thrive by combining conventional pediatrics with functional medicine, homeopathy, essential oils, and Traditional Chinese Medicine. She is the Founder of Healthy Kids Happy Kids, a trusted online resource for holistic pediatric advice. Dr. Song is also the Founder and Holistic Pediatrician at Whole Family Wellness. Her new book, Healthy Kids, Happy Kids: An Integrative Pediatrician’s Guide to Whole Child Resilience, offers practical insights on how to nurture resilient children. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 10 July 2025

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge sits down with Dr. Eric Viegas, a naturopathic doctor and Fullscript’s Medical Product Manager, to pull back the curtain on the world of supplement quality and safety. From raw ingredient sourcing to manufacturing audits, Dr. Viegas explains what CGMP really means, how Fullscript ensures product integrity, and why certifications like NSF and third-party testing matter. You’ll learn how to evaluate your supplements for quality, what common industry terms really mean (or don’t), and what to avoid—like potentially dangerous sports nutrition products and under-tested trendy gummies. Whether you’re a clinician or a supplement-savvy consumer, this episode offers practical insights to help you navigate the supplement landscape with confidence. You’ll hear them discuss: - What CGMP certification actually means—and why it matters - The hidden dangers of poor manufacturing practices and counterfeit products - Why Fullscript’s catalog is CGMP-certified across all 375+ brands - How and why supplements like turmeric are tested for purity, potency, and contamination - The surprising problems with gummies and “pharmaceutical grade” claims - Which third-party certifications actually mean something (and which don’t) - Why the supplement industry is regulated—but not in the way most people assume - How Fullscript handles recalls, audits, and adverse event reports - What every provider and consumer should know before recommending or taking a supplement

Transcribed - Published: 3 July 2025

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge sits down with functional immunology expert and educator Dr. Samuel Yanuck to explore one of the most overlooked systems in chronic illness: the immune system. With clarity and compassion, Dr. Yanuck breaks down how immune dysregulation can contribute to complex conditions like depression, neuropathy, migraines, chronic fatigue, and even cardiovascular disease. From brain inflammation and mast cell activation to Epstein-Barr virus and mold, Dr. Yanuck offers a new way of thinking about biology—where inflammation isn’t just a symptom, but a system that can be measured, understood, and treated. You’ll here them discuss: - Why immunology could be at the root of nearly every chronic illness - The immune pathways that connect depression, anxiety, brain fog, and fatigue - What PANS, PANDAS, and autoimmune encephalitis really are—and why they’re often misdiagnosed - How gut, brain, and immune health form a feedback loop - The labs you should run if you suspect chronic immune dysfunction - A framework for evaluating chronic viral infections like EBV and CMV - Natural immune modulators: Chinese skullcap, astragalus, quercetin, sulforaphane, and more - Why personalized immune workups—not protocols—create results Guest Bio: Dr. Samuel Yanuck is a functional medicine clinician and expert educator in functional immunology. He is the creator of Cogence Immunology, a comprehensive online training program that has educated over 9,000 clinicians in over 60 countries. His approach blends immunology, clinical experience, and systems thinking to help providers and patients uncover the true drivers of chronic illness. Dr. Yanuck is also the co-founder of the Yanuck Center for Life and Health in North Carolina, where he sees patients and helps clinicians find root-cause solutions to immune dysfunction through mentorship and collaboration. His work is helping reshape how the next generation of practitioners understand inflammation, autoimmunity, and healing. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 19 June 2025

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge sits down with neurologist and bestselling author Dr. Dale Bredesen to challenge everything we think we know about brain aging. Dr. Bredesen shares why age-related cognitive decline is not just treatable but in many cases preventable—and even reversible. Drawing on decades of lab research and clinical success, he outlines the root causes of cognitive decline and introduces the listener to the "cognoscopy," a powerful tool for early detection. With practical, science-backed insights on inflammation, insulin resistance, environmental toxins, and the emerging brain microbiome, this is a masterclass in 21st-century brain health. You’ll here them discuss: - Why cognitive decline is often preventable—and sometimes reversible - The three key drivers of cognitive decline: inflammation, energy deficit, and toxicity - How to use the "cognoscopy" to catch signs of dementia early - The role of the brain’s microbiome and oral health in neurodegeneration - Why mold, metals, and mycotoxins are underestimated threats - New blood biomarkers like pTau217, GFAP, and NFL - Supplements that support brain health, including magnesium threonate and omega-3s - How to tailor treatment using functional lab testing and wearables - Stories of patient recovery—and what makes the difference Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 12 June 2025

In this episode of The Root Cause Medicine Podcast, we’re joined by Dr. Elisa Song—pediatrician, integrative medicine expert, and author of Healthy Kids, Happy Kids. With a deep commitment to helping children thrive, Dr. Song shares how gut health forms the foundation of pediatric wellness and why holistic care is essential in addressing the chronic health challenges kids face today. We dive into how the microbiome shapes immunity, mood, and behavior, and why addressing nutrition, lifestyle, and environmental factors is crucial for long-term health. Dr. Song also breaks down five core pillars for nurturing a healthy gut in children and reveals the surprising ways added sugar and ultra-processed foods impact the developing brain. You’ll learn: - The role of gut health in preventing and managing childhood conditions - Five foundational habits to support your child’s microbiome - How sugar and processed foods disrupt children's brain and gut function - The link between gut health and mental wellness in kids - What lab tests can help assess and guide pediatric gut health interventions This episode is a must-listen for parents, caregivers, and healthcare providers who want to raise healthy, resilient children through informed, integrative strategies. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 10 June 2025

In this episode of The Root Cause Medicine Podcast, we’re joined by Dr. Allen Sussman—seasoned endocrinologist, educator, and author of Saving the Art of Medicine. With over three decades of experience, Dr. Sussman shares how evidence-based medicine can enhance patient care when it's combined with empathy, open-mindedness, and critical thinking. We explore how research can be misinterpreted, the value of integrating complementary approaches, and how true healing requires more than just following protocols—it requires understanding the person behind the diagnosis. You’ll learn: - How evidence-based medicine influences clinical decisions - The difference between statistical and clinical significance - The value of listening to patients and tailoring care - Why biases in studies must be considered when applying data - How alternative and integrative approaches may complement conventional care This episode is a must-listen for healthcare providers and curious patients alike who want to understand how medical evidence can be both scientific and compassionate. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 5 June 2025

In this heartfelt farewell episode of The Root Cause Medicine Podcast, Dr. Kate Kresge and Dr. Carrie Jones sit down to share a major announcement: Dr. Carrie is stepping down as co-host to launch her own podcast, Hello, Hormones. This episode is full of reflection, laughter, and excitement as Dr. Carrie shares why now is the time to follow her calling to educate, empower, and entertain through hormone-focused conversations. With a book coming in 2026, thousands of hormone tests analyzed, and decades of clinical and teaching experience, Dr. Carrie is ready to deliver education that’s practical, hilarious, and deeply needed. You’ll hear them discuss: - Why Carrie is pivoting to launch Hello, Hormones - The vision for her new podcast: education, sass, and science - How misinformation around hormones (and cancer) persists - What women need to know about perimenopause, fertility, and metabolic health - Her certifications and clinical experience across naturopathic endocrinology - Her skincare, castor oil, and longevity tips (because glow matters too!) - The myth she wants to bust (hint: it’s about hormone fearmongering) - Why “you’ve always had the power” is her guiding truth

Transcribed - Published: 3 June 2025

In this episode of The Root Cause Medicine Podcast, Dr. James Greenblatt—psychiatrist, educator, and author—shares his personalized, functional medicine approach to supporting individuals with eating disorders. Drawing from over 30 years of clinical experience, Dr. Greenblatt explains how nutrient deficiencies, malnutrition, and genetic individuality play a major role in mental health conditions like anorexia, bulimia, and binge eating disorder. He also discusses the importance of lab testing and how personalized supplementation and nutrition strategies can be used alongside therapy and medication. You’ll learn: Why micronutrient testing is important in eating disorder care How deficiencies in zinc, omega-3s, and B vitamins may impact brain function What role genetics, celiac disease, and gut health might play How to use testing to guide individualized support plans Why the “nutrition by addition” approach can be a game-changer for recovery This episode offers a compassionate, science-backed perspective for clinicians, families, and anyone interested in integrative mental health care. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 29 May 2025

In this episode of The Root Cause Medicine Podcast, Dr. Anthony Crifase is joined by Brandy Zachary, DC, IFMCP, Clinical Director at Body Love Cafe. They discuss the root cause of food sensitivities, the difference between food sensitivities and allergies and the future of food sensitivity treatment.

Transcribed - Published: 22 May 2025

In this episode of the Root Cause Medicine Podcast, Dr. Carrie Jones sits down with seasoned compounding pharmacist Sara Hover, RPh, to demystify the world of personalized medications. They dig into how compounding pharmacies offer tailored solutions for hormone therapy, acne, hair loss, weight loss, and more—and why this approach can be life-changing for patients who’ve hit dead ends with conventional medicine. Sarah shares eye-opening stories, from hormone creams and sublingual weight loss medications to pediatric popsicles and custom thyroid solutions, showing just how flexible and powerful compounding can be. What You’ll Learn: - What compounding pharmacies actually do—and why it matters - Why the finished compounded meds aren’t FDA-approved (and why that’s okay) - How bioidentical hormone therapy transforms women's health - Solutions for allergies to common fillers like red dye or peanut oil - Fun and effective delivery forms: lozenges, topical creams, even popsicles - Hair loss, acne, eczema, and anti-aging compounding options - The surprising science behind sublingual GLP-1s for weight loss - How to find (or help your doctor become) a compound-friendly provider Sara Hover, RPh is a compounding pharmacist with 30 years of experience and a specialty in hormone replacement therapy. She serves as a lead educator at PCCA, where she trains pharmacists and providers on the latest in compounding innovations. Sarah is passionate about personalized, patient-centered care—and believes no one should be told they're "crazy" when a tailored medication might be the real solution. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 20 May 2025

In today's episode of The Root Cause Medicine Podcast, we navigate the importance of brain health and preventing cognitive decline with Louisa Nicola. You’ll hear us discuss: 1. How women in their 30s and 40s can prevent Alzheimer's 2. Why exercise is the best preventive tool against Alzheimer's disease 3. The surprising benefits of resistance training for your brain health 4. Nutrition insights for enhancing brain health 5. Why the best thing for a healthy aging brain is social connections Louisa is a neurophysiologist and human performance coach. She is the Founder of Neuro Athletics, a consulting firm that works with top athletes worldwide, leveraging EEG scans, lab tests, and cognitive assessments to optimize performance. Louisa's insights delve deep into the minds of elite NBA and MLB stars. Additionally, she serves on the board of Momentous, Tonal, and Klora. Order tests through Rupa Health, the BEST place to order functional medicine lab tests from 30+ labs - https://www.rupahealth.com/reference-guide

Transcribed - Published: 15 May 2025

In today’s episode of The Root Cause Medicine Podcast, Dr. Kate Kresge sits down with Dr. Ellen Vora to discuss a revolutionary framework for understanding anxiety—not as a disorder, but as a message from the body or soul. They explore the difference between false anxiety, which stems from physiological imbalances like blood sugar crashes, sleep disruption, and inflammation, and true anxiety, which often points to deeper emotional or existential truths. You’ll hear them discuss: - Why anxiety is the beginning of an inquiry—not a final diagnosis - The difference between “false” (body-based) and “true” (purpose-driven) anxiety - How nutrient deficiencies and gut imbalances can mimic psychiatric symptoms - The surprising mental health effects of hormonal birth control - How to use food as medicine to support neurotransmitter balance and calm - The dangers of benzodiazepines—and how to taper with the help of functional medicine - The power of psychobiotics, circadian rhythm, and inflammation reduction - Why GABA, inositol, and phosphatidylcholine are key to recovery - How to approach anxiety with both compassion and curiosity

Transcribed - Published: 13 May 2025

In today's episode of The Root Cause Medicine Podcast, we explore various topics related to immune resilience and reducing sickness in children with Dr. Chris Magryta. You’ll hear us discuss: 1. Why kids are getting sick so often 2. How to boost immune resilience in children 3. The superfoods your child needs 4. Tips for limiting screen time and improving sleep in children 5. Nurturing a healthy gut and brain development in children Addressing allergies and intolerances in children 6. Effective parenting approaches and resources for nurturing children's health Dr. Chris has been practicing medicine in North Carolina for 24 years, viewing each child as a catalyst for improving human health. He is an Integrative Pediatrician at Salisbury Pediatric Associates and the Medical Director of Standard Process. Additionally, Dr. Chris serves as the Chairman of Children First of North Carolina and hosts Dr. M’s Women and Children First podcast, where he interviews experts on maternal and child health, focusing on upstream anthropology and root cause analysis for change.

Transcribed - Published: 8 May 2025