Tania Heller, M.D., a board-certified pediatrician, has a special interest in adolescent medicine. She is the medical director of the Suburban Center for Eating Disorders and Adolescent Obesity in Bethesda, Maryland. She is also the author of Eating Disorders: A Handbook for Teens, Families and Teachers (2003) and Pregnant! What Can I Do?: A Guide for Teenagers (2002).