The American Dietetic Association has updated a key policy to include vegan diets in its advice that a properly planned and balanced diet can be healthful not only for adults but also for all children, from infants to teens. A vegan diet means no animal products whatsoever (including eggs, cheese and yogurt, for example).
-From Tuesday's Miami Herald, and an article entitled "Dietitians be Flexible and Veg Out."
Search "vegetarian children" on Amazon for a number of interesting titles on this subject.
PS - Three months a vegan at this point, and I feel great!