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ABSTRACT: Objective
This study aimed to identify diets with improved nutrient quality and environmental impact within the boundaries of dietary practices.Design
We used Data Envelopment Analysis to benchmark diets for improved adherence to food-based dietary guidelines (FBDG). We then optimised these diets for dietary preferences, nutrient quality and environmental impact. Diets were evaluated using the Nutrient Rich Diet score (NRD15.3), diet-related greenhouse gas emission (GHGE) and a diet similarity index that quantified the proportion of food intake that remained similar as compared with the observed diet.Setting
National dietary surveys of four European countries (Denmark, Czech Republic, Italy and France).Subjects
Approximately 6500 adults, aged 18-64 years.Results
When dietary preferences were prioritised, NRD15·3 was ~6 % higher, GHGE was ~4 % lower and ~85 % of food intake remained similar. This diet had higher amounts of fruit, vegetables and whole grains than the observed diet. When nutrient quality was prioritised, NRD15·3 was ~16 % higher, GHGE was ~3 % lower and ~72 % of food intake remained similar. This diet had higher amounts of legumes and fish and lower amounts of sweetened and alcoholic beverages. Finally, when environmental impact was prioritised, NRD15·3 was ~9 % higher, GHGE was ~21 % lower and ~73 % of food intake remained similar. In this diet, red and processed meat partly shifted to either eggs, poultry, fish or dairy.Conclusions
Benchmark modelling can generate diets with improved adherence to FBDG within the boundaries of dietary practices, but fully maximising health and minimising GHGE cannot be achieved simultaneously.
SUBMITTER: Mertens E
PROVIDER: S-EPMC7844616 | biostudies-literature | 2021 Feb
REPOSITORIES: biostudies-literature
Public health nutrition 20200923 3
<h4>Objective</h4>This study aimed to identify diets with improved nutrient quality and environmental impact within the boundaries of dietary practices.<h4>Design</h4>We used Data Envelopment Analysis to benchmark diets for improved adherence to food-based dietary guidelines (FBDG). We then optimised these diets for dietary preferences, nutrient quality and environmental impact. Diets were evaluated using the Nutrient Rich Diet score (NRD15.3), diet-related greenhouse gas emission (GHGE) and a d ...[more]