Most people understand that serious weight loss requires changing attitudes toward what they eat and how often they exercise. But, what if the process could be aided by simply chewing a stick of gum after meals? That’s the question a team of scientists, led by Syracuse University chemist Robert Doyle, is trying to answer. In a groundbreaking new study, Doyle’s team demonstrated, for the first time, that a critical hormone that helps people feel “full” after eating can be delivered into the bloodstream orally.