The number of seriously overweight children has more than doubled in the last three decades, and those extra pounds are creating serious medical problems. Examines ways parents can keep their child's weight within healthy limits. Suggests simple techniques, such as playing games, exercising with the family, preparing healthful snacks and meals, and watching portions. Talks with Alan, a 12-year-old boy, who has overcome obesity-induced diabetes. Lists diabetes warning signs. Includes tips on how to help children become more active.