IMPORTANT NOTE: This is a book summary of The Complete Guide to Fasting by Jason Fung and is not the original book.Different diets drop in and out of fashion all the time. All of them promise sustainable weight loss and a healthier, fitter you but most are quickly replaced by the new 'next best thing'. One buzzword in the world of dieting and wellness at the moment is 'fasting' - but is it just another fad? Not at all, says Dr. Jason Fung, author...