Clinical Research Directory

Inclusion Criteria: 1. Diagnosis of mild-to-moderate intellectual disability (ID). 2. 18-35 years of age. 3. BMI \>24.9, Body weight \<350lbs. 4. Sufficient functional ability to understand directions, communicate preferences, e.g., foods, wants, and can communicate through spoken language e.g., request more to eat/drink, asks for assistance with food preparation. 5. Living at home with a parent/guardian, or in a supported living environment with a caregiver who assists with food shopping, meal planning, and meal preparation and agrees to serve as a study partner. 6. Plan to attend all study required visits over the next 24 mos. Exclusion Criteria: 1. Unable to participate in PA. 2. Insulin dependent diabetes as this condition requires medical monitoring beyond the scope of this study. 3. Participation in a weight management program involving diet, PA, or pharmacotherapy in the past 6 mos. 4. Diagnosis of Prader-Willi Syndrome. 5. Pregnancy during the previous 6 mos., currently lactating or planned pregnancy in the following 24 mos. Participants who become pregnant will be removed from the study and referred to appropriate agencies for consultation. 6. Serious medical risk, e.g., cancer, recent heart attack, stroke, angioplasty as determined by the PCP. 7. Unwilling to be randomized. 8. Unable to participate in small group, in-person instruction. 9. Use of wheelchair or power chair as primary locomotion.