When it comes to spaghetti sauce, there are many different options. Some spaghetti sauces contain ingredients that make them not the best spaghetti sauce for diabetics such as sugar and high-fructose corn syrup. The spaghetti sauce you choose should be low-carb spaghetti sauce, low in fat, and high in fiber. This will help keep your blood sugar levels stable and reduce your risk of spiking blood sugar levels!