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Eating behavior in morbidly obese patients undergoing gastric surgery: differences between obese people with and
J A Guisado1, F J Vaz, J J López-Ibor
1Department of Psychiatry, University of Extremadura, Badajoz, Spain. jguisadom@medynet.com
Background:
This study analyzes eating behavior in a group of morbidly obese patients who have undergone gastric reduction surgery for weight loss, and evaluates whether the existence of psychiatric comorbidity marks significant differences in their eating behavior.
Methods:
The study group was composed of 100 morbidly obese patients (85 females, 15 males) who had received surgical treatment for weight reduction (vertical banded gastroplasty). 40 of these patients (40%) met ICD-10 criteria for the diagnosis of psychiatric disorders and were included in the "Psychiatric Obese group" (PO). The other 60 patients (60%) did not show ICD-10 diagnostic criteria and were included in the "Non-Psychiatric Obese group" (NO). Each patients completed the Binge Eating Scale (BES), the Three Factor Eating Questionnaire, the Bulimia Investigatory Test-Edinburgh (BITE), and the Eating Disorder Inventory (EDI).
Results:
Significant differences were found between the two groups (PO and NO) in the Binge Eating Scale (p < 0.001), Three Factor Eating Questionnaire subscale Disinhibition (p < 0.001), BITE (p < 0.001), Eating Disorder Inventory subscale Perfectionism (p < 0.002), and Global EDI (p < 0.001). Logistic regression analysis showed correlation between PO group and Global EDI (Odds Ratio OR = 1.43) and BITE (OR = 1.16). No significant gender differences were found for eating behavior, clinical diagnosis, age, percentage of weight loss, time after operation, and BMI before surgery.
Conclusion:
Surgically treated morbidly obese patients with a psychiatric disorder (PO) have a more destructured eating pattern (with a predominance of binge eating and disinhibition) than NO.