Summary
Drewnowski (2020) reviews existing approaches to quantifying nutrient density and considers how these metrics might be reframed to incorporate sustainability dimensions, including environmental cost and affordability. The paper likely argues that nutrient density indices, traditionally focused on micronutrient content relative to energy, need to be evaluated alongside ecological impact to be meaningful in the context of sustainable dietary guidance. It contributes to ongoing methodological debate about how food quality metrics can serve both public health and planetary health objectives.
UK applicability
Although not UK-specific, the conceptual and methodological arguments are directly relevant to UK dietary guidelines, food labelling policy, and the integration of sustainability criteria into nutrition standards such as those developed by the British Nutrition Foundation and SACN.
Key measures
Nutrient density scores (e.g. NRF index); nutrient-to-calorie ratios; environmental sustainability indicators (e.g. greenhouse gas emissions per nutrient unit, cost per nutrient)
Outcomes reported
The paper examines how nutrient density can be conceptualised and measured in ways that account for environmental sustainability, exploring the alignment and tensions between nutrient-rich foods and their ecological footprints.
Topic tags
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