 14-week run-in. To qualify for randomization, participants must lose 5 of initial weight in the 14-week dietary run-in. This loss will be achieved with the provision of weekly, group lifestyle counseling, which includes a 1000-1200 kcalday portion-controlled diet that combines four daily servings of a liquid diet HMR shakes with an evening meal of a frozen-food entree and a fruit and vegetable serving. More than 70 of participants are expected to achieve the 5 criterion loss during the 14-week run-in. 