Summary
This paper by Drewnowski and Fulgoni, published in Nutrition Reviews, presents a methodological framework for nutrient profiling of foods using a family of nutrient-rich food (NRF) index scores. The authors examine how different combinations of qualifying nutrients and disqualifying components can be weighted and standardised per unit of energy to produce reproducible, science-based rankings of food nutritional quality. The work has broad relevance for dietary guidance, food labelling policy, and research into the relationship between diet quality and health outcomes.
UK applicability
Although the NRF index was developed primarily in a North American context, the methodological framework is widely applicable internationally and has informed nutrient profiling approaches used in UK and European food labelling and public health policy, including work underpinning front-of-pack labelling schemes.
Key measures
Nutrient-rich food (NRF) index scores; nutrient density per 100 kcal; number and selection of qualifying nutrients; correlation with Healthy Eating Index (HEI); food rankings by nutrient profile
Outcomes reported
The study developed and evaluated nutrient-rich food (NRF) index scores designed to rank foods based on their content of beneficial nutrients relative to energy. It assessed how different index formulations correlate with dietary quality measures and existing food guidance systems.
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