Nov 25, 2022
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
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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)
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