All eating disorder have roots in low self esteem. People who focus so much on their physical appearance too are most likely to get into eating disorder. The most common eating disorders are anorexia nervosa and bulimia nervosa.
Anorexia nervosa is the avoidance of food intake while bulimia nervosa may involve over eating and induced vomiting. Both sicknesses are serious. It is not enough to force feed a person that is suffering anorexia nervosa. The person would need a holistic medication.
Studies have shown that most of who have these sicknesses are women. It also noted that gays comprise a large section of the population of men who suffered these two eating disorders. There has to be a close link between getting slim and eating disorders.