A third eating disorder, called 'binge eating disorder' is currently being researched. This disorder includes 'recurrent binges, lack of control during the binging episode, and distress about binging, as well as other characteristics, such as rapid eating and eating alone. It appears to be more prevalent than either anorexia or bulimia nervosa'. this dirosrder is currently being studied, but it is not yet a formal diagnosis. I'm a psych student currently reading about eating disorders at my university. hope that helped... good luck to u all.