Sleeve Gastrectomy (SG) or Vertical Gastrectomy is purely restrictive and is recognized by the American Society for Metabolic and Bariatric Surgery (ASMBS) as an approved procedure for weight loss.
The procedure involves removing a large portion of the lower stomach and creating a long, tubular structure, which will limit food intake.
The mechanisms of weight loss and improvement in co-morbidities seen after SG might be related to gastric restriction, hormonal changes related to gastric resection or gastric emptying, or some other unidentified factor or factors.
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