Like "The GL is a better scale than the GI because it takes portion size into consideration. The GI is based off people eating a flat amount of carbs from a certain food, 75g I think, and for a number of them it is an insane amount. For instance 1.75lbs of raw carrots. I don't know about you but I don't eat that many in one go! The GL uses the GI but works in the portion size you are actually going to eat. There are a number of foods that switch around considerably from being high GI to low GL and low GI to high GL."