There is no magic pill that will cure obesity, a condition that affects over 40% of adults in the United States. But there is a new type of medicine that is a potential game-changer. It’s an anti-obesity medication, and doctors say that part of what makes it unique is how it’s prescribed: It is used to treat obesity as the chronic metabolic disease that it is rather than perpetuating the misconception that obesity is a problem that can be overcome by willpower.