28 Jun 2018 --- In 2016, 12.9 million children lived in food-insecure households. These children represent a vulnerable population since their developing brains can suffer long-term negative consequences from undernutrition and micronutrient deficiencies. A new study published in the Journal of Nutrition Education and Behavior found that among these vulnerable children, food insecurity had a greater impact on behavior problems in young children of single mothers living in urban neighborhoods.