Decoding Health
Step into the world of Decoding Health, where Dr. Urban A. Kiernan and renowned experts delve into a myriad of fields, unraveling the complexities of science and its practical applications in our daily health. This show is committed to illuminating topics ranging from personal health and wellness to cutting-edge biopharmaceutical advancements and beyond.
Join us each week for an enlightening journey through the realms of science and discover the incredible tools that can enhance your everyday life.
Dr. Urban A. Kiernan holds a Ph.D. Bio-Analytical Chemistry from Arizona State University. His use of the title “doctor” or “Dr.” is in relation to himself and solely refers to that degree as an expert who has significantly contributed to his specific field of science. This video is for general informational purposes only. It should not be used to self-diagnose and it is not a substitute for a medical exam, cure, treatment, diagnosis, and prescription or recommendation. He does not hold any license or credentials for clinical/patient care and any information provided does not create a doctor-patient relationship between Dr. Urban A. Kiernan and you. You should not make any change in your health regimen or diet before first consulting a physician, or equivalent licensed medical provider, and obtain a medical exam, diagnosis, and other recommendations. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition and establishment of treatment plan.
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Decoding Health
Insulin Resistance & Prediabetes: Metabolic Reset With Dr. Kaitlin Castillo
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Dr. Kaitlin Castillo pulls back the curtain on why so many people can look healthy on the outside while quietly living in a metabolic “danger zone” underneath the surface. Using real-world clinical context, she breaks down what processed, packaged eating does to blood sugar regulation, why insulin resistance can progress for years before patients are clearly warned, and what “good doctor” communication should look like when labs start trending in the wrong direction.
The conversation also examines the incentive structures inside modern healthcare—how payor systems can shape clinical behavior, and why some physicians feel pressured to follow narrow protocols rather than address root causes. From the statin conversation to “they didn’t do anything wrong—they did what they were told,” Dr. Castillo explains how well-intentioned care can still miss the mark when the system rewards maintenance over prevention.
On the action side, she challenges common assumptions: why 10,000 steps isn’t a workout—it’s the baseline; why being “cured” isn’t real if you can’t return to the same habits that got you sick; and how specific dietary strategies (including carnivore and keto approaches for certain people) may help correct metabolic dysfunction. The episode closes with a broader critique of the U.S. food system, why constant eating works against human biology, and how an overly metric-driven culture can distract from what actually changes health outcomes.
Dr. Kaity Castillo is a board-certified nurse practitioner specializing in primary care and metabolic health. Through her clinical practice and coaching programs, she helps patients address the root causes of fatigue, weight gain, hormonal imbalances, and chronic metabolic dysfunction. Dr. Castillo combines evidence-based medicine with personalized lifestyle strategies to deliver sustainable, whole-person results. Her mission is to empower individuals to understand their bodies, optimize their health, and build long-term vitality.
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Thank you to our sponsor - iMetabolic Biopharma Corporation: Together, we can be the next stage in developing a revolutionary approach to drug discovery. We give communities the opportunity to invest in their own health as we improve how drugs are discovered to make them more effective and affordable. Visit https://imbiopharma.com/ to learn more.
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