This study aims at understanding the alteration of the eating impulse arising after bariatric surgery. Hunger is transformed after surgery, with satiety being quickly achieved, but not the sensation of satiation. There is an evident misunderstanding between hunger as non-satiety and as dissatisfaction, with anguish emerging as the resulting affect, which surgery does not correct. In-depth psychological treatment is crucial as the surgery creates new emotional demands for the patient.133425440