text: They can only if you're under 18 and your parents want you to go. If you are under 18 it's worth a try to tell your doctor that you don't want them to tell your parents. Sometimes they will comply. But in all sincerity, as a recovering anorexic, I would say that being thin in not worth the heath consequenses. My friend who is a recovering bulimirexic almost died of pnemonia becuse her body could no fight off the infection.