 Background: control of the speed of eating and the amount of food eaten is a major intervention in Mandometer treatment of anorexia nervosa AN, bulimia nervosa BN, and eating disorders not otherwise specified EDNOS, including binge eating disorder BED, which is an EDNOS. The control is achieved by Mandometer, which is a scale connected to a computer. The patient eats food from a plate on the scale and the computer records the weight loss of the plate over the course of the meal. Thus, the amount of food eaten and the duration of the meal are measured. This yields a measure of the speed of eating. Patients also estimate their feeling of fullness at regular intervals on a scale on the Mandometer computer screen and the computer stores the ratings. Thus, the development of satiety is also measured. AN-patients eat only little food over a long period of time. They practice eating more food at a higher speed by following training curves on the computer screen while eating. This is possible because the patients can see their own speed of eating emerging on the screen while eating and so they can adjust their speed of eating to the training curves. The patients learn to feel full in a normal manner by practicing in the same way, assisted by feedback from the Mandometer computer screen. Mandometer treatment of AN and BN has been evaluted in a randomized controlled trial, outcome of treatment of 1428 patients with eating disorders in six clinics in four countries has been reported, and the treatment has been reported to be more effective than a standard treatment in reducing body weight and improving health in obese adolescents in a randomized controlled trial. Mandometer has been cleared as an eating disorder conditioning tool, class 2 device by the FDA for the treatment of eating disorders. 