Healthy eating behaviour is based on two sensations: hunger and satiety. Eating disorders disrupt this mechanism. This disturbance is a physiological consequence of malnutrition and can be reversed if diet is improved. Anorexia and bulimia, recognised as conditions in their own right, are two examples of eating disorders. It is estimated that 9% to 10% of adult women suffer from compulsive-type eating problems. Men represent 10% to 15% of people affected by an eating disorder. These disorders are very often triggered during adolescence.