During the last years, an increasing number of studies was appearing which analyze food security issues through the prism of global CGE models. Nevertheless, that within the modern literature the close link between poverty, food insecurity and vulnerability is well defined, global CGE models still tend to use the concept of the single representative agent or household within their analysis. This approach is capable to depict between countries differences in the state of food security, however, it is limited to provide valuable insights about the food security situation of particularly vulnerable socio-economic groups within countries. Within the present study, we aim to compare the features of integrating, disintegrating and merging CGE and alternative type models for the assessment of the medium-long term changes of food security. The particular focus is made on the role of aggregation of households in the assessment of issues of food security.