Abstract:There is currently little agreement on the optimal ratio of animal-sourced (ASP) versus plant-sourced proteins (PSP) in sustainable human diets. We deployed a biophysical optimization model to find the optimal ASP:PSP ratio at current and recommended protein intake levels for the EU28 countries. Results show that the lowest environmental impact for both land use and greenhouse gas emissions is achieved at a recommended protein intake of 46 g protein/cap/day with an ASP:PSP ratio of 40:60 (18 g ASP/cap/day). At… Show more
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