There has been much news on Childhood disorders, especially Attention Deficit Disorder and  Autism. There is even reason to believe that it is in epidemic proportion in our society today. Here are some researched nutritional guidance for children with autism and Attention Deficit Disorder
Many children respond to an increased intake of Omega -3 Fatty acids, especially DHA; 1-3 g/day. A Gluten free and casein-free diet may also be helpful.
What is a Gluten-free diet?
This diet is  based on the exclusion of gluten; a part of wheat, oats, barley and rye and casein which is the primary protein in milk and dairy products.
Dietary sources of Omega-3  Fatty Acids include fish, especially fatty fish such as sardines in sardine oil, Salmon; Atlantic, Tuna, Lobster.
Taken in part from: Mahan, K. &  Escott-Stump, S. ( 2008) Krause’s Food and Nutrition Therapy.12th Ed .  St. Louis Mo.,.Elsevier