Type 1 diabetes, also called juvenile onset diabetes, is different from the type commonly associated with obesity -- that's Type 2. Type 1 is an autoimmune disorder for which there is no cure yet, and it usually arises in children. About one in every 400 Americans age 20 or younger have the disease, according to the Centers for Disease Control and Prevention. Blood-glucose testing is the most important means of managing diabetes, but as endocrinologist Larry Deeb notes, kids don't exactly welcome the tests. They might be OK with them if they're part of a game, however.