Now, we're telling you to stay away from sugar, but how are you supposed to go about doing so? Madelyn says that in general, avoiding products that have sugar listed as the first ingredient on the label is a good idea. The first ingredient is the highest concentration. So, the higher up sugar is listed in the ingredient list, the smaller you want your portion to be. Keep in mind, you're looking to eat real food, not a teaspoon of sugar. Therefore, sugar should not be listed very high up in the list.