
The glycemic load (GL) of food is a number that estimates how much the food will raise a person's blood glucose level after eating it. Glycemic load is based on the glycemic index (GI), and is calculated by multiplying the grams of available carbohydrate in the food times the food's GI and then dividing by 100.
The Glycemic Index (GI) is a scale that ranks carbohydrate-rich foods by how much they raise blood glucose (sugar) levels compared to a standard food - glucose or white bread.