Episode 2241 - On this Friday's show, Vinnie Tortorich speaks with Dr. Jason Fung and gets your fasting questions answered, including why CICO doesn't work, the "dawn effect", hormones, and much more. https://vinnietortorich.com/2022/11/your-fasting-questions-answered-dr-jason-fung-episode-2241 PLEASE SUPPORT OUR SPONSORS YOUR FASTING QUESTIONS ANSWERED Vinnie welcomes Dr. Jason Fung back to the show and they chat about misconceptions about what fasting is. (2:00) Dr. Fung explains what fasting is and how CICO (calories in, calories out) is an epic disaster. Weight loss isn't about calories, it's about hormones like insulin and allowing your cells to work. Vinnie asks Dr. Fung about thermodynamics and CICO. (9:00) Thermodynamics has nothing to do with weight gain; it applies to physics, but not physiology. If CICO worked, then all of the "diet businesses" (like Weight Watchers) would be out of business. They explain that fasting affects hormones, which is why eating throughout the day is bad advice. Vinnie and Dr. Fung discuss intermittent fasting as well as medical fasting: what it is, how it works, and some of its benefits. (29:00) They clarify whether or not fasting affects muscle growth. They also discuss what is happening in a "dawn effect". (40:40) Vinnie brings up measuring ketones and Dr. Fung's thoughts on that. They switch to discussing the hormones ghrelin and leptin, what each one does and how each works. (47:45) Dr. Fung clarifies what indeed breaks a fast. (55:30)   [the_ad id="20253"] PURCHASE BEYOND IMPOSSIBLE The documentary launched on January 11! Order it TODAY! This is Vinnie’s third documentary in just over three years. Get it now on Apple TV (iTunes) and/or Amazon Video! Link to the film on Apple TV (iTunes):  Then, Share this link with friends, too! It's also now available on Amazon (the USA only for now)!    Visit my new Documentaries HQ to find my films everywhere: REVIEWS: Please submit your REVIEW after you watch my films. Your positive REVIEW does matter! FAT: A DOCUMENTARY 2 (2021) Visit my new Documentaries HQ to find my films everywhere: Then, please share my fact-based, health-focused documentary series with your friends and family. The more views, the better it ranks, so please watch it again with a new friend! REVIEWS: Please submit your REVIEW after you watch my films. Your positive REVIEW does matter! FAT: A DOCUMENTARY (2019) Visit my new Documentaries HQ to find my films everywhere: Then, please share my fact-based, health-focused documentary series with your friends and family. The more views, the better it ranks, so please watch it again with a new friend! REVIEWS: Please submit your REVIEW after you watch my films. Your positive REVIEW does matter!