The food you put into your body has a direct impact on the way it develops and functions. Proper nutrition is fundamental for developing children, and can be an extremely helpful tool for those who struggle with focus and behavior issues. While poor nutrition—especially diets high in sugar and processed foods—doesn't cause attention issues and anxiety, it has been linked directly to exacerbating the symptoms. On the other hand, a nutritious diet has been found in studies to help reduce these issues.