One of the best-selling diet guides in the UK is The Fast Diet audiobook, written and narrated by Michael Mosley and Mimi Spencer. Learn how to lose weight and keep it off forever. The key, as outlined in this guide, is to eat normally for five days of the week and keep two days where you watch what you eat – easy! Hear about the success stories, the best way to do this diet and the science behind why it works so effectively.