Recommendations are made by nutritional policies aiming at improving food quality. What is the social impact of these nutritional standards? Are they more difficult to accept by low income populations? It is appropriate to check to what extent, on a theoretical level, nutritional recommendations may be fulfilled with a low food budget. Some studies indicate food consumption of poor populations is influenced by financial constraints. Do these constraints have a significant impact on the foods consumed, possibly inducing nutritional deficiencies? This opens the debate on the relevance of an interventionist policy on food prices.