Policy Research for Front of Package Nutrition Labeling: Developing and Testing a Summary System Algorithm. 2.7.3 Unit Basis for Measurement of Nutrients


Nutrient criteria are based on either a weight (per 100 g or serving) or energy (per 100 kcal). Some issues exist with each type of unit basis. Since food is consumed in servings, not on a 100 g or kcal basis, the serving size basis seems logical. At least one system found that a per 100 kcal basis performed slightly better in predicting overall diet quality than a serving size basis; however, anomalies do occur with very low-energy dense foods consumed in smaller portions than 100 kcal, such as green leafy vegetables.