The purpose of this trial is to study the safety and efficacy of a pre-packaged, portion controlled meal plan on weight loss and glycemic control in overweight and obese patients with type 2 diabetes. Aim 1 - Effects on Weight Assess the effects of a pre-packaged, portion controlled meal plan on weight loss in overweight and obese patients with type 2 diabetes. The researchers hypothesize that the pre-packaged, portion controlled diet (PCD) will produce a greater weight loss than a diabetes support and education (DSE) program at 12 weeks. The study will be powered to detect between group differences of 3% of body weight. Secondarily, the researchers will assess whether there are any differences in weight during the secondary phase from weeks 13-24 when both groups will consume a PCD diet. Aim 2 - Effects on Glycemic Control Assess the effects of a pre-packaged, portion controlled meal plan on glycemic control in overweight and obese patients with type 2 diabetes. The researchers hypothesize that the PCD will show greater improvement in HbA1c levels than a DSE group at 12 weeks. The study will be powered to detect between group differences of .5% in HbA1c. Secondarily, improvements and differences in HbA1c from weeks 13-24 when both groups are consuming a PCD will be assessed.

NCT00593476

Conditions

1. Type 2 Diabetes

Interventions

1. Other: PCD
2. Other: DSE

MeSH:Diabetes Mellitus, Type 2

HPO:Type II diabetes mellitus

We will use these samples to determine the possibility that the common genetic variant ENPP1 K121Q could predispose diabetic and metabolic syndrome subjects to respond better to weight loss intervention than those who have the common variant K121K. --- K121Q ---