Sandra G. Hassink, MD, FAAP, is the director of the pediatric weight management clinic at Alfred I. duPont Hospital for Children in Wilmington, Delaware, and an assistant professor of pediatrics at Thomas Jefferson University Medical School. She is a member of the American Academy of Pediatrics national task force on obesity and a medical editor of "Fit Kids: A Practical Guide to Raising Healthy and Active Children--From Birth to Teens." She lives in Wilmington, Delaware.