Abstract Background The objective was to estimate the prevalence of household food insecurity (HFI) depending on sociodemographic factors and its association with lifestyle habits and childhood overweight and obesity. Methods Data was collected from 1,938 children aged 2 to 14 years who participated in the “Study about Malnutrition” of the Community of Madrid. Weight and height were obtained through physical examination. Body mass index was calculated as weight/height2 (kg/m2) and the criteria of the WHO...