The three popular fat loss programs I evaluated are Weight Watchers, Jenny Craig and Nutrisystem. Weight Watchers has been around for many years. Weight Watchers currently has two diet options, the flex plan and the core plan. The flex plan is an updated version of the points food system, the goal is to stay within your recommended amount of points each day, the points value for foods is calculated based on the food’s calories, fat, and fiber. The core plan is based on the science of energy density. Energy density refers to the amount of calories in a given weight of food. The core plan provides a “balanced diet by centering on a list of healthy foods that keep you full longer”. The focus on a balanced diet, exercise, and behavior changes is
