The Low-Glycemic Index Diet was developed by Dr. David J. Jenkins, a professor of nutrition at the University of Toronto and later turned into a successful line of diet books by author and former president of the Heart and Stroke Foundation of Ontario, Rick Gallop. According to the publishing company, Virgin Books, the G.I. Diet has sold over two million copies.
G.I. stands for Glycemic Index, a medical term used to measure the speed at which carbohydrates break down in the digestive system to form glucose. Glucose is the body’s source of energy – it is the fuel that feeds your brain, muscles, and other organs. Glucose is set at 100, and all foods are indexed against that number. So foods that are quickly digested have a high G.I., and foods that are digested more slowly have a lower G.I. It’s also possible to lower the GI of a meal with a few teaspoons of vinegar and the addition of fresh fruits and vegetables
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