We are now in the era of weight-loss drugs. Decisions on how these drugs will be used look likely to shape our future health and even what our society might look like. And, as researchers are finding, they are already toppling the belief that obesity is simply a moral failing of the weak-willed. Weight-loss drugs are already at the heart of the national debate. This week, the new Labour government suggested they could be a tool to help obese people in England off benefits and back into work. (BBC News)