The important parameter is glycemic load (GL). GL is different from GI—how much food do you have to eat to get the 50 grams of carbohydrate? GL takes into account the beneficial effect of fiber. A good example is carrots, which are high-GI (lots of carbohydrate) but low-GL (even more fiber). More fiber means a larger portion, because there’s less digestible carbohydrate. You can turn any high-GI food into a low-GL food by eating it with its original fiber. Real Food is by definition low-GL.
