The size of your stomach is permanently reduced with bariatric weight loss surgery by using low-invasive, laparoscopic techniques. These techniques create small incisions that heal faster than large incisions, with less pain, lower risk for infection, and minimal scarring.
Your doctor will likely recommend one of two primary types of weight loss surgery: Roux-en-Y gastric bypass or gastric sleeve resection.
Roux-en-Y Gastric Bypass
Roux-en-Y gastric bypass is the most common weight loss surgery in the United States. You’ll lose about 75 percent of your excess weight in 12 to 18 months after surgery. A total weight loss of 60 to 70 percent is generally maintained.
The stomach tissue is stapled down and a small pouch is created at the top of your stomach. The volume of this pouch is less than one ounce. This pouch is then attached to a limb of the small intestine. Food bypasses the rest of the stomach and the first part of the small intestine.
Weight loss is achieved because:
- You feel full with smaller amounts of food.
- Food absorption is inhibited.
- Hormonal changes temporarily suppress the appetite.
Gastric Sleeve Resection
Gastric sleeve resection removes the left side of your stomach. This leaves a thin tube down the right side through which food travels. It works in similar ways to gastric bypass, with suppressed appetite, lower food absorption, and a sense of a full stomach.
In short-term follow-up studies, weight loss from gastric sleeve resection is slightly less effective than with gastric bypass, but is preferred for patients with serious small bowel problems, such as Crohn’s disease.
Am I a candidate?