Resistant Starch, Antioxidant Status and Insulin Resistance

Inclusion Criteria: * Overweight and obese adults * Age: 20-50 years Exclusion Criteria: * weight loss or gain (more than10%) over the past 6 months, or weight loss (more than 5%) over the past 1 month * pregnancy, lactation or menopause * History of acute disease or clinical evidence of cancer, acute or chronic inflammatory diseases, cardiovascular disease, renal disease, liver disease, thyroid or endocrine disease * Gastrointestinal disease of which ingredients found in the study products have adverse effects on that * Use of antihypertensive, lipid lowering or glucose lowering medications * Taking antioxidant, vitamin, and/or mineral supplements * smoking