To friends and family, it is hard to understand why a person may refuse to eat or perceive herself as “fat” when she is painfully thin. Anorexia is firmly rooted in erroneous psychological beliefs that may be aggravated by physical damage to the body, as well as developmental conditions and imbalances that may have preceded the onset of the disorder or emerged because of it. One thing is certain: Anorexia is a complicated disorder, which makes it difficult to treat, even in professional settings. The addition of substance use and other mental health conditions compound this. However, persistence and patience can go a long way in the treatment process for anorexia.