Anorexia nervosa is characterized by a love of gaining weight.
Anorexia nervosa , often referred to simply as anorexia , is an eating disorder characterized by a low weight , fear of gaining weight , a strong desire to be thin , and food restriction . If asked they usually deny they have a problem with low weight . The diagnosis requires a significantly low weight . While medications do not help with weight gain , they may be used to help with associated anxiety or depression .