Why “Eat Less, Move More” Doesn’t Work with Dr. Jason Fung

Why is obesity so difficult to reverse even when people try to eat less? In this episode, Ethan sits down with Dr. Jason Fung, nephrologist and author of The Obesity Code and The Diabetes Code, to unpack the hormonal science behind weight gain, insulin resistance, and type 2 diabetes. They explore why the calorie model of weight loss often fails, how insulin drives fat storage, and why fasting can be a powerful metabolic tool. The conversation also touches on addiction, modern food environments, and sustainable approaches to health. If you enjoyed this conversation, sign up for Ethan’s newsletter for more insights and updates: https://ethansuplee.substack.com/subs... SHOW HIGHLIGHTS 00:02 Introduction to Dr. Jason Fung 01:20 Type 1 vs Type 2 Diabetes 04:15 The Problem with the Calorie Model 09:02 Why Eating Less Often Fails 17:12 Hormones and Weight Gain 24:47 Insulin Resistance Explained 33:42 The Role of Fasting 41:43 Food Environment and Addiction 50:16 Why Processed Food Is So Powerful