Gastric Sleeve Surgery
The Laparoscopic Sleeve Gastrectomy -often called the sleeve- — is performed by removing 80% of the stomach. The remaining stomach is about the size of a banana (in length and circumference).
The sleeve works to help you lose weight by two primary and interacting benefits: Restriction and Metabolic Changes.
Restriction: Similar to RYGB, the new stomach sleeve holds a much smaller amount of food compared to before surgery. This helps to significantly reduce the amount of food (and this calories) that can be consumed.
Metabolic Changes: Also similar to RYGB, the greater impact of the sleeve seems to be the effect the surgery has on gut hormones that impact a number of factors including hunger, satiety, and blood sugar control. Short term studies show that the sleeve is as effective as the RYGB in terms of weight loss and improvement or remission of diabetes. There is also evidence that suggest the sleeve, similar to the gastric bypass, is effective in improving type 2 diabetes independent of the weight loss.
What are the advantages and disadvantages of the Laparoscopic Sleeve Gastrectomy?
1) It is a less complicated surgery to perform than RYGB
2) Restricts the amount of food the stomach can hold
3) Induces rapid and significant weight loss that comparative studies find similar to that of the Roux-en-Y gastric bypass. Weight loss of >50% for 3-5+ year data, and weight loss comparable to that of the bypass with maintenance of >50%
4) Does not require the placement of a foreign object like gastric band
5) No bypassing or re-routing of the food stream as in RYGB
1) Is not reversible
2) Has the potential for long-term vitamin deficiencies