University of Agder May 29 2026 Researchers at the University of Agder (UiA) have already identified clear links between what children eat and their mental health as early as the age of four. Children who eat plenty of fruit and vegetables show fewer signs of anxiety and restlessness. Those who eat a lot of sweet and salty foods display more disruptive behavior. There is such a clear link between what we eat and how we feel, both physically and mentally, that we need to talk more about it."