The Fast 800 - How to combine rapid weight loss and intermittent fasting for long-term health presents a dieting programme built around an 800-calorie approach. It is described as a flexible programme, with low-carb, Mediterranean-style recipes and menu plans by Dr Clare Bailey. Key details Diet programme based on an 800-calorie intake Designed to be flexible, allowing different levels of intensity depending on goals Includes low-carb, Mediterranean-style recipes Menu plans by Dr Clare Bailey Synopsis The book cites recent studies suggesting that 800 calories is a key figure for successful dieting, described as manageable while also supporting faster weight loss and a range of metabolic changes. The programme is presented as highly adaptable, enabling readers to choose how intensively to follow it based on their goals. It also includes low-carb, Mediterranean-style recipes and menu plans by Dr Clare Bailey. The Fast 800 is described as a method intended to support weight loss and improvements in mood, blood pressure, inflammation and blood sugars.