Why Cutting Calories Triggers Weight Regain | Dr. Jason Fung

The Hunger Code Book: https://www.amazon.com/Hunger-Code-Resetting-Thermostat-Ultra-Processed/dp/1778401562 Weighted Vest Letter: https://staycuriousmetabolism.substack.com/p/how-weighted-vests-trick-your-body?r=40ekz2 Brain Insulin Resistance Letter: https://staycuriousmetabolism.substack.com/p/this-study-changed-how-i-see-junk?r=40ekz2 “Calories don’t cause obesity” is a provocative phrase—but it’s biologically accurate. It challenges a deeply entrenched misconception: that overeating causes obesity, rather than obesity driving overeating. If that sounds confusing, you’re not alone. Most people have been taught to think about it the other way around. In this discussion, Dr. Jason Fung and I work to untangle that misunderstanding. We explore how energy imbalance—so-called “overeating” and "excess calories"—is more often a consequence of obesity, not its root cause. What truly drives obesity is a complex interplay of social and hormonal factors that increase hunger and/or reduce energy expenditure. Until we address those underlying forces, we can’t meaningfully solve the problem. This isn’t an issue you can fix through sheer willpower—so it’s time we stop pretending that you can. Chapters 0:00 – Calories Don’t Cause Obesity: A Provocative Experiment 2:08 – A Misunderstanding of The Energy Balance Equation 5:38 – What Happens When You Force Feed People to Gain Weight? 14:39 – The Problem of Over-Hunger & History of Bariatric Surgery 19:52 – Homeostatic Hunger: Physical Signals and Hormones 20:40 – Hedonic Hunger: Pleasure, Reward, and Food Addiction 30:50 – Conditioned Hunger: Pavlov, Environment, and Social Triggers 35:50 – Social Influence: Obesity Spreads Like a Virus 38:40 – Building Tools to Fight Conditioned Hunger 41:18 – The Powers of Mental Reprogramming and Mantras #HungerCode #Obesity #Hunger #ProcessedFood #Carbohydrate #Fasting #IntermittentFasting #LowCarb #KetogenicDiet #Keto #KetoDiet #WeightLossScience #Ghrelin #FatLoss #Metabolism #HomeostaticHunger #HedonicHunger #ConditionedHunger #Dopamine #HungerHormones #JasonFung #Diabetes #NutritionScience #HealthEducation #FoodAddiction #Hormones #GLP1 #Insulin #DietMyths #MetabolicHealth #BodyFat #PrecisionNutrition #SelfExperiment #Carbs #SugarFree #BehavioralScience #EatingHabits #Fiber #Protein #NeuroScience #HungerScience #EvidenceBased #HealthResearch #FoodAddiction #MMindset #StayCurious #NickNorwitz