In 1981, Dr. David Jenkins of the University of Toronto came up with a ranking system for carbohydrates based upon how long it takes them to break down into the system. Some carbohydrates break down very slowly and those release glucose gradually into the bloodstream and have a low glycemic index. For people who are diabetes, particularly those who are insulin dependent, a low glycemic index is preferable. These foods allow the insulin or medication to respond better to the blood glucose and allows for the sugars to break down more naturally.
Other foods are rated high on the Glycemic Index. These foods currently have high ratings and raise the blood glucose level quickly. High glycemic foods can be beneficial for people who are recovering from high exertion or those suffering from hypoglycemia. People with Type I or Type II Diabetes should avoid high glycemic foods as they can play havoc with the insulin or medication they are taking.
