Effect of Increased Intake of Low Fat Dairy Products on Weight Loss and Insulin Resistance

Inclusion Criteria: * Overweight and obese (BMI of 27 to 37 kg/m2) * Impaired glucose tolerance (fasting blood glucose \>5.6 mmol/L) or * Type 2 diabetes treated with diet and exercise alone (no medications) * One or more of the following criteria for metabolic syndrome: 1. Hypertriglyceridemia (\> 1.70 mmol/L) 2. Low high-density lipoprotein (HDL) cholesterol (\< 1.04 mmol/L in men and \< 1.30 mmol/L in women) 3. High blood pressure (\> 130/85 mm Hg) 4. High waist circumference ( \> 94 cm in men, \> 80 cm in women) * Weight stable and no changes in exercise in past 3 months Exclusion Criteria: * Type 1 diabetes * Type 2 diabetes treated with oral hypoglycemic agents or insulin * HbA1c \> 8% * myocardial infarction or have undergone a cardiovascular intervention within the past three months * Subjects taking fibrate or statins who have had a dose change within the 8 weeks prior to randomization * Liver or pancreas disease * Major gastrointestinal surgeries * Pregnant or lactating * Exhibit alcohol or drug dependence * Taking drugs influencing appetite * Have a milk allergy or lactose intolerance * Following a diet or exercise regime designed for weight loss * Have a body weight greater than 350 lb (weight limit for DEXA instrument) * Chronic use of bulk laxatives, antacids or calcium supplements