People with anorexia may get so thin that they look like they're sick. People with bluimia often try to hide their binging and purging. They may hide food for binges. Bulimics are usually close to normal weight, but their weight may go up and down. We don't know exactly.
Society also puts a lot of pressure on people to be thin.
This pressure can contribute, too. For anorexics, the first step is getting back to a normal weight. If you're malnourished or very thin, you may be put in the hospital. Your doctor will probably want you to see a dietitian to learn how to pick healthy foods and eat at regular times. Encourage her to get help from a parent, a friend, a school nurse or counselor, or her family doctor.