You are not eating because you are hungry. You are eating because you have been trained to, and the food industry designed it that way. This episode dismantles everything you thought you knew about hunger, weight loss, and metabolism, and gives you a science-backed framework to finally stop fighting your own biology.
Host Dave Asprey sits down with Dr. Jason Fung, a New York Times bestselling author, practicing nephrologist, and one of the most trusted voices in functional medicine and metabolic health. Dr. Fung completed medical school at the University of Toronto and a fellowship in nephrology at Stanford University. He is the author of multiple critically acclaimed books including The Obesity Code, The Diabetes Code, and his newest release The Hunger Code, and is the co-founder of The Fasting Method, a program designed to help people lose weight and reverse type 2 diabetes through fasting and real food nutrition. His work has helped millions break free from calorie restriction dogma for good.
Together, Dave and Dr. Fung expose the three types of hunger driving the obesity epidemic, why calorie restriction fails almost every time, and what ultra-processed foods actually do to your brain’s reward system. They get into the real science of fasting, metabolism, hormonal signaling, GLP-1 drugs, food addiction, conditioned eating behavior, and how your physical environment is quietly sabotaging your results. If you are serious about biohacking your hunger, optimizing your body composition, and taking control of your biology without white-knuckling willpower, this episode delivers the tools you need.
You’ll Learn:
-Why calorie restriction fails and what actually controls how much you eat
-The three types of hunger: homeostatic, hedonic, and conditioned, and how each one drives overeating
-How ultra-processed foods hijack your dopamine system and destroy satiety signals
-Why wiring your jaw shut or cutting your stomach still does not produce long-term weight loss
-What GLP-1 drugs like Ozempic actually reveal about hunger, metabolism, and the body fat thermostat
-How conditioned hunger works like Pavlov’s dogs and practical strategies to reverse it
-The role of your physical environment in controlling food noise and cravings
-Why food addiction is real, and which foods are engineered to keep you hooked
-How fasting resets hunger signals, improves metabolic flexibility, and supports ketosis
-The mindset shift that makes healthy eating feel effortless instead of like deprivation
Resources:
• Check out all of Dr. Fung’s books and content at: https://www.doctorjasonfung.com/
• Get My 2026 Clean Nicotine Roadmap | Enroll for free at https://daveasprey.com/2026-clean-nicotine-roadmap/
• Dave Asprey’s Latest News | Go to https://daveasprey.com/ to join Inside Track today.
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Timestamps:
0:00 – Trailer
1:01 – Introduction
2:29 – The 3 Types of Hunger
4:41 – Conditioned Hunger
6:51 – Ultra-Processed Foods
11:47 – Dave’s Personal Story
14:06 – The Calorie Debate
16:32 – Restricting Calories Doesn’t Work
18:38 – The 3 Why’s Framework
20:21 – Shame in Weight Loss
25:05 – GLP-1 Drugs
27:53 – Ranking the 3 Hungers
33:43 – Food Addiction
38:31 – Fake Fats & Fake Sweeteners
45:03 – 3 Golden Rules for Weight Loss
47:42 – Deprogramming Hunger
50:36 – Pavlok & Behavior Hacking
59:26 – Outro
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