Prolongs interventions through denial or defensiveness

What happens when someone prolongs interventions through denial or defensiveness or completely refuses to accept help for eating disorders?

Anorexia Nervosa

Anorexia nervosa is a serious and potentially life-threatening — but treatable — eating disorder. It’s characterized by extreme food restriction and an intense fear of gaining weight. Treatment usually involves several strategies, including psychological therapy, nutritional counseling and/or hospitalizati

Hello. This is for my abnormal psychology class. Any kind of help is appreciated. thank you