Determination of the Glycemic Index of Products Varying in Levels of Refined and Whole Grain Corn

Inclusion Criteria: * Adults aged 18-75 years, inclusive. * BMI between 18.0 and 35.0 Kg/m2. * Willing to abstain from unusual strenuous exercise and consuming alcoholic drinks for 24 hours before study days. * Willing to refrain from smoking tobacco or marijuana for 12h before and during study visits. * Willing to maintain habitual diet, physical activity pattern, and body weight throughout the trial. * Understanding the study procedures \& willing to provide informed consent to participate in the study \& authorization to release relevant protected health information to the study investigator. * Participants must be eligible to receive income in Canada and be covered by a health insurance plan such as OHIP. Exclusion Criteria: * Self-reported pregnant or breastfeeding women. * Known history of gastrointestinal disease (e.g., diverticulitis, Crohns disease, coeliac disease etc.), bariatric surgery, AIDS, hepatitis, a history or presence of clinically important endocrine (including Type 1 or Type 2 diabetes mellitus), or any condition which might, in the opinion of the medical director either: 1) make participation dangerous to the participant or to others, or 2) affect the results. * Use of medications known to influence carbohydrate metabolism, gastrointestinal function or appetite, including, but not limited to adrenergic blockers, diuretics, thiazolidinediones, metformin and systemic corticosteroids within 4 weeks of the screening visit, or any medication which might, in the opinion of the medical director either: 1) make participation dangerous to the participant or to others, or 2) affect the results. * Major trauma or surgical event within 3 months of screening. * Unwillingness or inability to comply with the experimental procedures and to follow INQUIS health and safety policies. * Known intolerance, sensitivity or allergy to test products. * Participation in any clinical trial within the past 30 days (with the exception of routine GI testing of commonly consumed foods) or any PepsiCo sponsored trial within the past 3 months.