Which eating disorder is most commonly diagnosed among people who seek treatment?

A) EDNOS (eating disorders not otherwise specified)
B) anorexia nervosa
C) purging episodes
D) bulimia nervosa
E) binge-eating followed by purging

EDNOS (Eating Disorders Not Otherwise Specified) is the most commonly diagnosed eating disorder among people who seek treatment, as it encompasses a range of symptoms that do not strictly fit the criteria for other specific eating disorders like anorexia nervosa or bulimia nervosa.