While France benefits from abundant and cheap food, and purchasing power is steadily increasing according to public statistics, food poverty has been increasing in this country as well as in other European countries for the last 10 years. To elucidate this paradox, this project implements research on food poverty in France. First, it develops an original statistical survey in general population, in partnership with Crédoc, in order to characterize and measure food poverty. In addition to this survey, ethnographic surveys are conducted at a territorial level, linking household budget adjustment strategies, material and temporal supply practices, solidarity and social protection issues. This project aims at renewing the view on the poor and their living conditions in rich countries by identifying the conditions for a transition to healthy and sustainable diets. By proposing a sociology of poverty based on living conditions, it contributes to the current debates on social solidarity, particularly around the establishment of a social security of food.