Eating disorder sufferers often exhibit abnormal behavior when eating food. This can take on a wide range of forms from following rigid or bizarre diets, obsessively counting calories on everything, regularly binge eating on junk food or sweets or inducing vomiting after eating. Generally eating disorders are classified in three ways: anorexia (deliberate self starvation), bulimia (purging after meals through vomiting or laxative use) and overeating (regularly gorging on food or binge eating).