The Fast 800 by Dr. Michael Mosley is a comprehensive guide to intermittent fasting and a Mediterranean-style diet designed to promote rapid weight loss, improve metabolic health, and reduce the risk of chronic diseases. Based on cutting-edge scientific research, this book introduces a flexible approach to fasting that encourages a mix of 800-calorie days, intermittent fasting, and nourishing, nutrient-dense meals. With meal plans, delicious recipes, and expert tips, The Fast 800 helps readers adopt a sustainable lifestyle that supports long-term health, boosts energy, and aids in weight loss—all while balancing the body’s natural rhythms for optimal results.