Food security and agricultural productivity are closely related in a country like Rwanda with a large rural and agrarian population and low food transformation technology. Rwandas agriculture is predominantly rainfall fed and hence any irregularity in weather conditions has adverse welfare implications. Using panel data, this study provides empirical evidences on socio-economic determinants of household food consumption in Rwanda and test if low household food consumption is related to the increase in household size. A fixed effects instrumental variables regression model is developed and...