Eating Disturbances and Psychiatric Disorders Among Extremely Obese Patients Before and After Bypass

Weight Loss Surgery Procedures - Research Into Gastric Reduction Surgery

Study Into Eating Disorders and Weight Loss After Stomach Bypass

Method

Sixty-five women patients (ages 19 to 67) with a mean BMI of 54.1 were assessed by semi-structured psychiatric interview before surgery and by telephone interview after surgery (mean follow-up: 16.4 months) to determine psychiatric status, eating disturbances, and weight and health-related variables.

Results

Patients lost a mean of 71% of their excess BMI, with significantly poorer weight loss outcomes among African Americans. Psychiatric disorders remained prevalent before (37%) and after (41%) surgery. In contrast, binge eating disorder dropped from 48% to 0%. Psychiatric diagnosis did not affect weight outcomes. Instead, more frequent preoperative binge eating, along with greater initial BMI, follow-up length, and postoperative exercise, predicted greater BMI loss. Postsurgical health behaviors (exercise and smoking) and nocturnal eating episodes were also linked to weight loss. Exercise frequency increased and smoking frequency tended to decrease after surgery.

Issues

These findings indicated that eating and psychiatric disturbances did not inhibit weight loss after gastric bypass and should not contraindicate surgery. Prior binge eating, eliminated after surgery, predicted BMI loss and, thus, may have previously been a maintaining factor in the obesity of these patients. The association between health behaviors and outcome suggests possible targets for intervention to improve surgical results. Poorer outcomes among African Americans indicate that these patients should be closely monitored and supported after surgery.

Authors:
Latner JD, Wetzler S, Goodman ER, Glinski J. Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand

Source:
National Library of Medicine

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