A Answers (1)
National Academy of Sports Medicine answeredThe glycemic index is a ranking of a food’s ability to contribute glucose to the blood stream. It challenges the assumption that absorption rate is related to the length of the carbohydrate molecule. In other words, it seems that long starch molecules should take longer to digest than short sugar molecules – but this is not always the case. Certain starches actually raise your blood sugar as high as sugars. In fact, there are some starches (highly processed carbohydrates like white flour, white rice, and some others) that raise blood sugar even higher than some sugars. That’s said, the relationship with weight gain is more difficult to establish. Low glycemic foods may contribute to the feeling of satiety (fullness) and may help us eat less. Also high glycemic foods are often highly processed, nutrient poor foods that we don’t really need to eat. Yet another good reason to choose minimally processed whole grains, fruits and vegetables as our carbohydrate sources.