Animal vs. Plant-Based Proteins
There is currently a trend in replacing animal proteins with plant proteins by shifting towards a more plant-based diet, as promoted in Western countries. However, such reduction may not only impair protein adequacy, but also the adequacy in other nutrients.
In a newly concluded study, linear programming optimization was used to assess the minimum protein level (Model Set#1) and the minimum animal protein contribution to total proteins (Model Set#2) that are compatible with the fulfilment of all nutrient-based recommendations.
Five French subpopulations were included. The findings showed that the animal protein contribution to total proteins compatible with meeting all nutrient-based recommendations at no additional cost varies between 45% and 60% depending on the group of adults considered. The authors concluded that total replacement of animal proteins with plant proteins may lead to protein inadequacy if additional cost is not available to supplement the shortfall.
 Vieux, Florent, Rémond, Didier, Peyraud, Jean-Louis & Darmon, Nicole. 2022. Approximately Half of Total Protein Intake by Adults must be Animal-Based to Meet Non-Protein Nutrient-Based Recommendations with Variation Due to Age and Sex. The Journal of Nutrition