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Gastric Sleeve

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.

In some cases, the SG is used as a “first-stage” procedure, followed by a second procedure which would complete the gastric bypass.

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.

In comparison to gastric bypass, the sleeve gastrectomy does not predispose individuals to marginal ulcers, vitamin deficiencies, dumping syndrome, or malabsorption. Endoscopy can still be used as a diagnostic technique, as the remaining stomach and first portion of the intestine are still accessible.


Weight loss surgery is generally designed for those with a body mass index (BMI) equal to or greater than 40, or equal to or greater than 35 with serious co-morbidities. Laparoscopic adjustable gastric banding with the Lap Band® is also FDA-approved for weight loss surgery in people with a BMI of 30 to 35 who have at least one obesity-related condition. Weight loss surgery is considered safe, but like many types of surgery, it does have risks. Consult with your physician about the risks and benefits of weight loss surgery.

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