Weight Loss and Maintenance for Individuals With Intellectual Developmental Disabilities (IDD)

Individuals with intellectual developmental disabilities (IDD) have obesity rates that exceed those in the general population, consume energy dense diets, and perform very little physical activity (PA). Overweight and obesity are independent risk factors for chronic disease such as cancer, diabetes, hypertension, and cardiovascular disease in both the general population and those with IDD. The investigators modified the Stop Light Diet (SLDm) to include reduced energy pre-packaged meals (PM) for 6 months, encouraged consumption of low energy shakes and 35 fruits and vegetables (F/V) per week. The investigators will compare participants who use the SLDm with participants who use a reduced energy and fat diet with meal plans, based off of the current American Dietetic Association recommended car for weight reduction plan.