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.