Full Show Notes: bengreenfieldlife.com/hungercode If you still think weight loss is just “calories in, calories out,” this episode will challenge that assumption. In this conversation with Dr. Jason Fung, author of The Obesity Code and The Hunger Code, we break down why obesity and persistent appetite issues are far more hormonal and metabolic than most people realize—and why ultra-processed foods may be resetting your body’s internal “fat thermostat.” Here’s what we cover: - The three types of hunger: homeostatic, hedonic, and conditioned - How hormones like leptin regulate a “body fat set point” - Why bulky, fiber-rich foods help regulate appetite - How blending and ultra-processed foods alter glucose and insulin responses - How modern food engineering amplifies cravings and overrides natural satiety signals - Why reducing calorie intake alone often backfires as the body adapts by lowering metabolic rate - How insulin, the microbiome, and digestion influence fat storage and appetite We also discuss fasting strategies, GLP-1 medications, digestion speed, and practical ways to reduce appetite without feeling deprived. If you’re navigating weight loss, appetite regulation, or simply trying to make sense of today’s food environment, this episode is for you. 📲 Check out my FREE Top Health Community! - https://joinlifenetwork.com 💊Shop My Curated Marketplace of Vetted Products! - https://shoplifemarket.com 🏋️Sign up for a FREE Coaching Call! - https://jointriumphcoaching.com 📩 Check out my FREE newsletter! - https://bengreenfieldlife.com/newsletter/ 🔗My Website: https://bengreenfieldlife.com/ 🔗My Podcast: https://bengreenfieldlife.com/podcast/ 🔗My Books: https://shopbengreenfieldlife.com/collections/books Connect with me: ⬇️ Instagram https://www.instagram.com/bengreenfieldfitness/ Facebook https://www.facebook.com/BGFitness X https://twitter.com/bengreenfield TikTok https://www.tiktok.com/@bengreenfield 00:00 Calories Alone Don't Explain Obesity 05:18 "Calories Misunderstood in Obesity" 11:49 "Energy Balance and Weight Dynamics" 17:55 Gut Health, Hormones, and Weight 25:49 Marathon Efficiency and Fitness Benefits 29:07 "Exercise, Appetite, and Calorie Balance" 35:36 Hunger: Driven by Hormones 43:44 "Body Fat Thermostat Controls Weight" 49:28 Vanishing Caloric Density Concept 52:33 "Blending Food Impacts Digestion" 01:00:38 "Ultra-Processed Foods Fuel Hunger" 01:03:38 Affiliate Disclosure and Product Integrity