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Updated: Jul 10, 2026

Roux-en-Y Gastric Bypass Operation in Rats

Roux-en-Y Gastric Bypass Operation in Rats

Published on: June 11, 2012

Psychiatric issues in bariatric surgery.

Lorenzo Norris¹

¹Department of Psychiatry, Medical Faculty Associates of George Washington University Hospital, 2150 Pennsylvania Ave NW, Washington, DC 20037, USA. lnorris@mfa.gwu.edu

The Psychiatric Clinics of North America

|October 17, 2007

Summary

Weight loss surgery (WLS) effectively treats severe obesity when diet and exercise fail due to hormonal changes. Psychological evaluation is crucial for patient selection and improving outcomes after WLS.

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Area of Science:

Bariatric Surgery
Obesity Medicine
Metabolic Surgery

Background:

Severe obesity is a complex condition often resistant to traditional diet and exercise interventions.
Hormonal and peptide alterations contribute to the ineffectiveness of lifestyle changes in morbidly obese individuals.
Weight loss surgery (WLS) offers a proven, effective intervention for significant excess body weight reduction.

Purpose of the Study:

To highlight the effectiveness of WLS for severe obesity.
To emphasize the necessity of a multidisciplinary approach in patient evaluation for WLS.
To outline key areas for psychological assessment in WLS candidates.

Main Methods:

Review of existing studies on WLS efficacy and patient selection.
Discussion of the physiological changes induced by WLS procedures.
Emphasis on comprehensive psychological assessment beyond standard interviews.

Main Results:

WLS procedures alter gastrointestinal anatomy and physiology, leading to substantial weight loss.
Successful WLS in motivated patients significantly reduces weight-related health problems.
Standardized instruments aid in accurate psychological assessment and WLS research.

Conclusions:

WLS is a highly effective treatment for severe obesity, addressing physiological and hormonal factors.
Thorough psychological evaluation, focusing on eating behaviors, surgical knowledge, and motivation, is essential for WLS success.
Risk management and enhancing postoperative quality of life should be primary goals in WLS patient assessment.