WeightWatchers is a leading global health and weight loss consultant. Weight watchers advocates the concept of achieving healthy weight loss through smart diet and reasonable exercise, without any external forces, drugs and equipment. Its patented dietary stick point system, which is used by exercise and nutritionists to measure the bar values of common foods, allows dieters to lose weight scientifically while ensuring overall nutrition. WeightWatchers has a huge following in Europe and America for its innovative, healthy weight loss programs. WeightWatchers provides members with a safe, relaxed, and mutually supportive learning environment for exchange. In April 2008, a study published in the British medical journal showed that the proportion of weight watchers lifelong members who lost weight one year later and still maintained significant medical results two years later was as high as 79.8% and 70.1%. Weightwatchers studies of program effectiveness are exemplary, the international association for obesity research writes in the medical journal obesity research.