Recent evidence demonstrate that patients with lower BMI before bariatric operations have greater chances of post-operative weight loss. Therefore, patients must be encouraged to lose weight before bariatric surgery for better outcomes. So far, bariatric surgery has evolved as an effective surgical option for morbidly obese patients.
However, genetic and environmental factors, which are known to influence weight regulation, should be considered during weight management of severely obese patients. Source: Obesity Surgery
