human
My friend says that he has an eating disorder. What is it?
assistant
Eating disorders are a mental health condition characterized by abnormal or disturbed eating habits, such as excessive and/or unhealthy dieting, extreme weight loss or gain, fasting, purging, or binge eating. Anorexia nervosa is the most common form of eating disorder, which involves an intense fear of gaining weight and a distorted body image. Other types of eating disorders include bulimia nervosa, binge-eating disorder, and pica.