One constraint when dealing with food security problems is the absence of measurement tools that allow for mitigation strategies to be targeted on each region individually. The elasticities can be used as a good exploratory instrument of food security. This paper presents a proposal for measuring the food insecurity dimensions of access and stability, integrating the values of the different kinds of elasticities. The methodology was applied to Spain, using data from nine groups of protein-rich foods of animal origin during the 2004-2015 period in 17 regions. The results suggest that, as regards foods rich in animal proteins, Navarra and Galicia are the regions with the highest food insecurity, and pork meat is the most insecure food product. Comparisons can be carried out between and within regions.