Additional Study Information: Our mission is to learn about teenagers and eating disorders. All of our research also includes healthy teenagers. This research study is looking for healthy teens between the ages of 12 and 18 years to participate in a study about food. As a participant in our study, you would: (a) complete a series of questionnaires and interviews, (b) complete an MRI (no radiation), (c) eat a meal in our eating laboratory. These procedures would be completed three times over the course of two years. For your participating in our study, you can earn up to $250 each time for your participation for a total of $750 over the course of two years. To be eligible for this study, adolescents must be 12-18 years old, female, and no history of a diagnosis of an eating disorder. For more information and to see if you are eligible, call the Columbia Center for Eating Disorders at 646 774 8066.