Behavioural changes following gastric surgery for morbid obesity: a prospective, controlled study.

The authors present results of a prospective, controlled longterm follow-up study of patients undergoing a gastric procedure for morbid obesity. Pre-operatively the gastric surgery group (GS) was compared with a group of normal weighted (NC) and obese (OC) individuals participating in self-help weight reduction groups. The GS group was assessed at 3-months, 6-months and one year or more post-operatively. All groups were examined by a structured self-rating schedule reflecting personal characteristics and family history, current attitudes and experiences related to personal weight, and an extensive exploration of eating habits. Moreover, the groups completed the Minnesota Multiphasic Personality Inventory (MMPI), the Katz Adjustment Scale and the Zung Self-rating Depression Scale. The results demonstrated major differences between the GS and the NC and OC groups initially, and at follow-up; the GS demonstrated major weight loss without major psychopathologic reactions. The GS did not show, however, major alterations in eating habits, but clearly showed behavioural change subsequent to weight loss.