Davis 1Anorexia nervosa is defined as a refusal to maintain a minimally normal body weight, in addition to a disturbance in the perception of body shape and weight (DSM-IV-TR , 2000). In this article, we will examine Carolyn Costin's battle with anorexia nervosa from a biopsychosocial perspective and what reinforced her disorder. This will be followed by a diagnostic use of the DSM-IV-TR in Carolyn's case and a conceptual use of the sociocultural dimension. Implications for Carolyn, her social and cultural context as well as society as a whole will be discussed. The article will then conclude with effective treatments for anorexia nervosa and why we should care about this disorder. The biological dimension of Carolyn's eating disorder includes examining her first-degree relatives, particularly women, for a pattern of abnormal eating behaviors. In Carolyn's family, perhaps a genetic contribution made her vulnerable and the changes her body underwent during puberty may have all contributed to her development of anorexia nervosa. Other factors to consider may be that Carolyn's hypothalamus, which controls her eating behavior, contributed to her abnormal eating habits, in addition to high levels of dopamine in her brain that may have diminished her desire to eat. Research has shown that there may be a link between people with eating disorders having a shorter dopamine transport train and people who do not. In Carolyn's case, she may have a shorter dopamine transport train and, as a result, has a less appetizing response to food compared to someone who does not have an eating disorder. Finally, Carolyn's changing eating habits may have changed the amount of paper....... Finally, the impact of the eating disorder on the individual, family and friends is another reason for which we should care about. Davis 6One of my best friends suffered from anorexia nervosa and after undergoing treatment at Remuda Ranch in Arizona, she was able to recover from her eating disorder and now maintains a healthy weight and lifestyle. In this article, we discussed Carolyn Costin's struggle with anorexia nervosa of abiopsychosocial origin. perspective and what reinforced his disorder. We then explored Carolyn's struggle with her eating disorder using the DSM-IV-TR criteria and conceptually utilizing the sociocultural dimension. The implications for Carolyn, her social and cultural context as well as society as a whole were discussed. Finally, we discussed effective treatments for theanorexia nervosa and why should we care about this disorder..