Weight Watchers helps dieters lose weight by providing guidance, education and group support. At the heart of the plan is a points system. Weight Watchers has compiled an extensive database of foods, even prepackaged and restaurant foods, and has assigned a point value to each one. Each dieter is allotted a specific number of points each day, based on weight loss goals and individual lifestyle. Weekly meetings, with weigh-ins, provide a sense of community and support.