Fast Keto With Ketogenic Girl

In this episode, Vanessa is joined by Dr. Jason Fung, author of The Hunger Code, to unpack the hormonal science behind fat loss — and how fasting may be entering a new era. They start with the three types of hunger and why obesity is not simply about willpower, but disrupted hormonal signaling. We break down insulin's role in fat storage, obesity, and how ultra-processed foods blunt satiety hormones. Vanessa and Dr. Fung also discuss how protein, fiber, and fat affect hunger very differently than refined carbohydrates — and why a calorie is not metabolically neutral. Then they shift to fasting. Dr. Fung shares his current protocols and comments on emerging research supporting Protein-Sparing Modified Fasting (PSMF) as a more practical, muscle-conscious alternative to prolonged water fasting. They cover: • PSMF vs water fasting • Protecting lean mass during fat loss • GLP-1 medications — risks and unintended consequences • Appetite suppression vs true metabolic health • Fat loss considerations for women in per