anorexia nervosa

A disorder in which a person refuses to maintain normal weight, has an intense fear of becoming obese, and feels fat even when emaciated.

binge eating disorder

Categorized in DSM-IV-TR as a diagnosis in need of further study; includes recurrent episodes of unrestrained eating.

body mass index (BMI)

Measure of body fat calculated by dividing weight in kilograms by height in meters squared; considered a more valid estimate of body fat than many others.

bulimia nervosa

A disorder characterized by episodic uncontrollable eating binges followed by purging either by vomiting or by taking laxatives.

obese

Currently defined as exhibiting a body mass index (BMI) of greater than 30.