A review of the psychosocial aspects of clinically severe obesity and bariatric surgery.

For the past 2 decades, clinically severe obesity (operationalized as a body mass index ≥40 kg/m2) has increased at a more pronounced rate that less severe obesity. As a result, the surgical treatment of obesity (bariatric surgery) has become a more widely accepted, yet still underutilized, treatment for persons with severe obesity and significant weight-related health problems. Psychologists play a central role on the multidisciplinary team...