In this episode of Decoding Health, Dr. Urban A. Kiernan sits down with world-renowned kidney specialist and best-selling author Dr. Jason Fung to discuss the science behind weight gain, insulin resistance, and his new book, 'The Hunger Code'.

In this episode of Decoding Health, Dr. Urban A. Kiernan explains why fasting insulin is the "lost biomarker" that can predict metabolic issues years—or even decades—before they show up on a standard glucose test.

Bella Ma (The Steak and Butter Gal) joins Decoding Health to reveal the shocking truth about her 6-year journey as a vegan and how it led to debilitating hormonal issues, cystic acne, and chronic anxiety.

In this episode of Decoding Health, Dr. Urban Akiran breaks down the science of this "miracle" bacterium. We explore how it helps with gut healing, blood sugar control, and weight loss, but more importantly, we discuss why most supplements on the market might be failing you.

In this deeply moving and scientific episode of Decoding Health, Dr. Urban A. Kiernan interviews Alexander Pujol, founder of Quantum Human Performance.

In this timely episode of Decoding Health, Dr. Urban breaks down one of the most controversial topics in modern agriculture: glyphosate, GMOs, and the growing concern over long-term cancer risk.

In this Decoding Health episode, Dr. Urban A. Kiernan sits down with Dr. Nick Nwabueze—known as “The Fittest Doc”—to unpack the real origin behind the name and the deeper philosophy it represents: becoming the fittest version of yourself through daily actions, behaviors, and sustainable habits.

In this episode of Decoding Health, Dr. Urban reacts to a viral cultural moment—South Park’s “flip the food pyramid” satire—and uses it to unpack what a real shift in U.S. nutrition guidance would mean for metabolic health.

In this Decoding Health episode, Dr. Urban A. Kiernan sits down with Alex Weisman, founder of Quantum Human Performance and a KidStrong owner/operator in the Phoenix market, for a wide-ranging conversation on what children’s health actually requires in 2026.

In this Decoding Health hot-seat episode, Dr. Urban A. Kiernan breaks down the real “upstream” story behind type 2 diabetes—and why the most dangerous phase often happens long before your labs ever flag you as “diabetic.”

In this Decoding Health episode, Dr. Urban A. Kiernan sits down with returning guest Dr. Micah Olson (pediatric endocrinologist turned longevity physician and founder of Valley HealthSpan in Phoenix) to unpack what DEXA scans can actually reveal about true health—not just aesthetics.

In this episode of Decoding Health, Dr. Urban breaks down one of the most misunderstood—and most dangerous—topics in modern health: visceral fat.

In this episode of Decoding Health, Dr. Urban A. Kiernan sits down with Tony Drake—lifestyle transformation coach, former WWF wrestler, and the man who lost 130 pounds and dropped from ~40% body fat to ~6%—to unpack what actually drives sustainable fat loss and lasting metabolic health.

In this episode of the Decoding Health, Dr. Urban Kiernan breaks down the science behind Urolithin A, a gut-derived compound gaining attention for its role in mitochondrial health, muscle performance, and metabolic function.

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.

In this episode of Decoding Health, Dr. Urban breaks down the real physiology behind GHK-Cu, a naturally occurring copper-binding tripeptide composed of glycine, histidine, and lysine.

Ronald M. Krauss joins the show for a practical, myth-busting deep dive into cardiometabolic risk, lipidology, and why the LDL conversation is often framed in the wrong direction.

In this Decoding Health segment, we break down why endogenous GLP-1 has an ultra-short half-life (about three minutes), and how the enzyme DPP-4 rapidly “clips” incretin hormones by targeting specific amino acids near the N-terminus—effectively destroying the signal before it can last.

Dr. Robert H. Lustig joins the show to break down why today’s metabolic health crisis is not a personal failure problem, but an environment problem, and how the power structure shaping food, policy, and public health has shifted in ways most people have not tracked.

In this episode of Decoding Health, we examine a recent shift in CDC guidance regarding hepatitis B vaccination recommendations for newborns.