How is your son's diet? It is important that he gets adequate vitamins and fruits and vegetables in the future, and especially that he is in school and school's tend to be germ factories. Look up in a search engine such as yahoo,altavista,etc vitamins beginning with A and ending at K. You'd be surprised at all the informative info out there and if you apply yourself you can help both you and your kids. Have you've ever tried juicing vegetables? The juice tastes great and there is no calories and best of all it's all natural, with no preservatives or chemicals. If you give your child vitamins A,C,D everyday your childs health can only improve.