Environmental Impact of Increased Adherence to SENC Food Based Dietary Guidelines in the Average Dietary Patterns in Spain

To analyze estimated changes in greenhouse gas (GHG) emission, cropland use and freshwater use of greater adherence to recommendations in Food-Based Dietary Guidelines (FBDG) issued by the Spanish Society of Community Nutrition (SENC) in average dietary patterns in Spain. The data analyzed was drawn from the ENPE study (n = 6800), a cross-sectional study conducted on a random population sample of Spanish population (2015). Dietary intake data was collected by means of a validated 210-item quantitative food frequency questionnaire. A score of adherence to recommendations in SENC FBDG (DG score) was computed (DG score range 0 to 16). Based on food group intake and adherence to each quantitative recommendation, we estimated food group consumption for a 20% increase in adherence to FBDGs. We calculated the potential environmental impact for those estimates, considering data available on crop specific environmental footprints for greenhouse gas emissions, cropland use and freshwater use. SENC FBDGs were formulated in tune with current food, cultural, gastronomic, and economic context. Changes in usual diets that people could comfortably afford in the short and medium term were suggested. Mean adherence DG score in this sample was 7.43 ± 1.94 (median = 7). Dietary changes required for increased adherence DG score included decreased consumption of red and processed meats as well as sugary foods and beverages. In addition, higher consumption of whole grains, fish, eggs, legumes, fruit, vegetables and nuts. Such dietary changes were estimated to contribute to 24% reduction in GHG emissions, but 16% increase in cropland use and 25% in freshwater use. FBDG are useful tools for preventive actions and health promotion, helpful for guidance in health, education, and community settings. Despite limited evidence, increased adherence to SENC FBDGs can contribute to reduce GHG emissions. Analysis of impact on a variety of indicators of sustainability, comprehensive food system view and consumer involvement are needed to gain adherence to FBDGs and additional impact on sustainability. Non-for-profit Eroski Foundation funded the ENPE study field work in collaboration with SPRIM. Funders had no role in data analysis, selection or interpretation of results. The authors declare no competing interests.