The course and outcome of eating disorders in adults and in adolescents: a review.

Over 100 studies have been published in the literature to date on the course and outcome of eating disorders. These have generally shown that approximately 50% of patients do well over time, approximately 30% do reasonably well but continue to have symptoms, and approximately 20% do poorly. In this article, the literature on the course and outcome of eating disorders is reviewed from two perspectives. The first is an analysis of studies in adults, looking in depth at a range of issues (weight, eating behaviors, menstrual function, psychosocial functioning, psychosexual function, mortality, bulimia nervosa, long-term follow-up, comorbidity, and prognostic factors) and reviewing the difficulties inherent to the performance of all eating disorders follow-up studies. The second is an analysis of whether adolescents with eating disorders have a better prognosis than adults, as has been considered in the literature. It is concluded that adolescents do, in fact, have a somewhat better prognosis than adults, with the differences seeming to be greater with a longer duration of follow-up.