I am interested in understanding how socio-economic insecurity shapes peoples experience of food insecurity, dietary patterns, and ultimately health outcomes such as obesity, in Mexico. Using a biocultural approach which includes considering the interaction between both sociocultural processes and human biology, I will aim to test the ‘welfare hypothesis’ that links weak national welfare structures with obesity. My aim for this study is to generate policy informative evidence around how welfare protection systems shape the effects of insecurity on mental wellbeing, diet, and body weight.