What is a glycemic index?
Developed in 1981 by Dr. David Jenkins at the University of Toronto, it is a ranking of carbohydrates based on their effect on blood sugar levels. Candy would have a higher glycemic index then an apple or squash because the sugars in candy are available almost immediately in the blood stream while it may take the body hours to process the carbohydrates in a vegetable like squash to raise your blood sugar.
