Is characterised by an extreme fear of gaining weight and a strong desire to be thin. This desire is often met through extreme dieting and in some cases vigorous exercise. Some individuals who have Anorexia Nervosa also use slimming pills, diuretics (water tablets), and laxatives or induce vomiting when they have eaten in order to control weight. Sometimes some individuals may purchase drugs online which they believe will aid weight loss. This can include raspberry ketones and thyroxine, as well as misuse of prescription drugs such as insulin.