In a group of early-onset-obesity obese patients eating behaviour, body image and psychological condition were assessed by the Eating Disorder Inventory, the Three Factor Eating Questionnaire, the Body Shape Questionnaire and the Body Attitude Questionnaire. These evaluations were carried out prior to and at long-term follow-up after biliopancreatic diversion when body weight had steadily fallen towards normal values. The aim was to establish the influence of actual body weight and shape over body image. A notable improvement in eating behaviour and overall psychological conditions was observed, while the parameters assessing body image remained substantially unchanged, indicating that early-onset-obesity postobese subjects, despite having obtained normal or nearly normal weight conditions, are still much more dissatisfied with their body weight and somatic morphology than never-obese subjects with very similar actual body weights.