The glycemic index or glycaemic index (GI) indicates how quickly carbohydrates get digested in the intestine and are absorbed as glucose in the blood.
Products with a high GI are for example baked potatoes, bread, cereals and popcorn. Pasta, beans and fruit are products with a low GI.
The Frenchman Michel Montignac was the first (early in the 90s) to use the glycemic index for weight loss. The Montignac Method is aimed at people wishing to lose weight efficiently and lastingly, reduce risks of heart failure, and prevent diabetes.
The GI of a product can vary. For example, the GI of a product changes by the way it gets prepared.