Food insecurity with past experience of restrained eating is a recipe for increased gestational weight gain

► Food insecurity was previously associated with high gestational weight gain. ► Dietary restraint is a measure of past failed dieting and weight fluctuation. ► A significant interaction between marginal food insecurity and dietary restraint was found. ► Pregnant women with marginal food insecurity and high dietary restraint gained more weight. ► Pregnant women with marginal food insecurity and low dietary restraint gained less weight.