As a rule, while lower-scoring foods are generally more nutritious, any nutritious food that raises your blood glucose levels will give you a higher score. All of this is because a food’s score is a single number that represents multiple nutritional attributes found in a serving of that food. Each attribute is considered as the food is scored. Foods vary in their nutrient composition, so it is not possible to predict the score of a food simply by looking at one or two nutrients. For example, a food that provides a lot of fiber per serving and complex carbohydrates per serving might have a score equal to another food that has very little fiber, but instead is higher in protein, low in fat, low in sugar, and perhaps provides other important nutrients in each serving.