The glycemic index of pasta, spaghetti, and macaroni – how can it be lowered?July 5, 2023 Although pasta is generally considered to be a “bad” food with a high glycemic index, this is not entirely accurate. For example, the GI of durum wheat spaghetti is 45 ± 6 units – which is quite comparable with buckwheat, lentils, and other grains.