Psychological Eating Behaviors as Predictors of 15-year Weight Changes After Surgical Treatment for Severe Obesity
H. Konttinen1, M. Peltonen2, L. Sjöström3, L. Carlsson3, J. Karlsson4,5
1University of Helsinki, Finland
2National Institute for Health and Welfare, Finland
3University of Gothenburg, Sweden
4Örebro University Hospital, Sweden
5Örebro University, Sweden
Background: There is a need for better understanding on the factors predicting long-term weight outcomes after bariatric surgery. This study examined whether psychological eating behaviors (cognitive restraint, disinhibition, hunger) were prospectively related to short- and long-term weight changes after surgical treatment for severe obesity. Methods: Participants were bariatric surgery patients (n=2010) from the Swedish Obese Subjects study, which is an ongoing, matched (non-randomized), prospective intervention trial. Physical measurements (weight, height) and questionnaires (Three-Factor Eating Questionnaire) were completed prior to surgery and 0.5, 1, 2, 3, 4, 6, 8, 10 and 15 years after the treatment. Findings: Pre-treatment eating behaviors were unrelated to subsequent weight changes, while lower 6-month and 1-year levels of disinhibition and hunger were associated with greater 2-,10- and 15-y weight loss (B=0.19–0.36 in men, B=0.09–0.28 in women, all p<0.05). Discussion: Problems in the regulation of eating shortly after bariatric surgery predicted poorer long-term weight outcomes, making post-operative overeating tendencies an important indicator of targeted interventions.