Mary Hartley

The Glycemic Index (GI) ranks foods that contain carbohydrates based on how they affect blood glucose levels. Foods with a low GI raise blood glucose gradually, whereas high GI foods create a sharp rise. A low GI Diet is said to avert hunger and blood sugar dips because it discourages insulin release. Many people successfully decrease their intake of high GI foods by avoiding sugar and refined starches in favor of high-fiber foods. - Mary Hartley, RD for DietsInReview.com

Here are a couple of resources:

http://www.dietsinreview.com/diets/Glycemic_Index/

http://www.health.harvard.edu/newsweek/Glycemic_index_and_glycemic_load_for_100_foods.htm