I think somebody has an eating disorder as a way to control the chaos in their lives, whether it's between a relationship with their parent that they really don't have a good boundary or an unmet emotional need, maybe by the other parent. It can also be a sibling that's acting out and seems to be the problem child, and they want to be the perfect one as a way to correct some of the chaos they've experienced. It could be a history of abuse, sexual abuse. Usually in adolescence when their body starts developing, they feel like, maybe that's the one thing they can control. A lot of it shows up in their food or their grades as a need to be perfect in order not to break the mold and add more chaos.