Prevalence of Eating Disorders

The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) introduced a chapter titled “Feeding and Eating Disorders,” which takes a life-span approach to diagnosing eating disorders and contains all related diagnoses. Rather than appearing throughout the text, all eating disorders are now contained within their own chapter for ease of review and comparison. Changes to the feeding and eating disorders include diagnostic revisions and the addition of several new disorders, including avoidant/restrictive food intake disorder and bingeeating disorder. While pica and rumination disorder remain unchanged, anorexia nervosa and bulimia nervosa experience some criteria changes. There is now a system for classifying the severity of several eating disorders (mild, moderate and severe) and an emphasis on body mass index for the diagnosis of anorexia nervosa. The DSM5 also attempted to address the number of cases of eating disorders that did not meet criteria in any one category (e.g., eating disorder not otherwise specified), and the authors discuss the result of this attempt in examining two new disorders. This paper examines these changes and addresses clinical implications, while alerting counselors to important diagnostic information.