2. Look for hidden or additional names of sugar, flour and wheat in the "Ingredient" section for the label on all packaged or canned foods, drinks marinades, dressings, and spices, including salt. Do not confuse this with the "Nutrition Facts" section, which may list naturally occurring sugar. For example, the label on a can of tomato paste may list tomatoes as the only ingredient and yet under the "Nutrition Facts" section it may list 3 grams of sugar. The 3 grams of sugar naturally occur in the tomatoes. Check all labels regularly as manufacturers often alter ingredients.