When marcus becomes anxious, he eats a tremendous amount of food over an extended period of time. afterward, marcus feels guilty about his binge eating but does not purge or exercise excessively. marcus is demonstrating the symptoms of?

Marcus is demonstrating the symptoms of binge-eating disorder.
This is a type of a disorder where an individual will eat large quantities of food, usually due to severe anxiety or depression, but will not purge afterwards. If the person did purge, then that would be bulimia, but since there is an absence of vomiting, it is a binge-eating disorder which can be treated with the help of a psychiatrist.