This document discusses weight loss and maintaining weight loss through calorie control. It explains that most dieters are unable to keep weight off because they return to old eating habits. The Cambridge diet plan helps dieters lose weight fast by providing nutritious meals with fewer calories than burned, without feeling hungry. It warns that weight will be regained if calorie intake exceeds calories burned after dieting. The plan aims to help clients develop healthy habits to maintain their weight loss long-term and enjoy improved health.