For the hyperactive children, performance on several tests, including a test for attention, was significantly worse after eating the high-carbohydrate breakfast, as compared with the scores of the children who ate the high-protein breakfast. A balanced breakfast — high in protein and carbohydrates from whole grains, fruits, and/or vegetables — ensures a varied supply of nutrients along with enough calories to sustain mental and physical energy until the next meal. Children with ADHD who are strictly vegetarian and those who avoid meat or dairy can get enough protein from meal choices that are rich in whole grains, legumes (dried beans and lentils), and the many meat and dairy substitutes made from soy protein and wheat gluten.