The weight loss cure, is a plan and book promoted by author Kevin Trudeau. Trudeau essentially claims that the majority of weight gain comes from people who are unable to control their food cravings. Those who cannot control their cravings are destined to have lower metabolism, which causes the calories to stay in the body, causing weight gain. Trudeau uses the work of a doctor practicing in the 1950s, to explain what he calls the weight loss cure.