Weight Watchers started, as many good business models do, by accident. Jean Nidetch wanted to lose weight and she got a number of friends together to form a support group for their diet plan. In 1961, her idea was born and has today, become an international business. Today, they are the world’s leading provider of weight watching services. They have as many as 50,000 meetings each week around the world where people learn about healthy eating habits, behavior modification and physical fitness.  Weight Watchers also has subscriptions online, allowing people to lose weight virtually and to enjoy “groups” online.