Jason Fung, MD is a Toronto-based nephrologist, obesity expert, co-host of the Low Carb MD Podcast, author of The Obesity Code and The Diabetes Code, and co-author of The Complete Guide to Fasting and The Longevity Solution. His latest book (with Eve Mayer and Megan Ramos) is Life in the Fasting Lane: How to Make Intermittent Fasting a Lifestyle―and Reap the Benefits of Weight Loss and Better Health.