The opposite of anorexia nervosa is "binge eating disorder" (BED). Anorexia nervosa and binge eating disorder are both eating disorders, but they represent two different ends of the spectrum in terms of eating behavior.
Anorexia nervosa is characterized by an intense fear of gaining weight, a distorted body image, and a relentless pursuit of thinness, often leading to severe restriction of food intake, excessive exercise, and other behaviors to control weight. People with anorexia nervosa typically have a significantly low body weight.
On the other hand, binge eating disorder is characterized by recurrent episodes of binge eating, where a person consumes a large amount of food within a specific period while feeling a loss of control over their eating. Unlike bulimia nervosa, individuals with BED do not engage in compensatory behaviors (such as purging) to "make up" for the binge eating episodes. As a result, people with BED are often overweight or obese, but not always.
Both anorexia nervosa and binge eating disorder are serious conditions that require professional help and support. If you or someone you know is struggling with an eating disorder, it's essential to seek help from a qualified healthcare professional or a mental health specialist who specializes in eating disorders.