Gastric Bypass

Gastric bypass is a procedure wherein the stomach’s larger part is bypassed, which means it no longer stores or digests food. There are two parts to the procedure. First, the surgeon creates a small stomach pouch by dividing the stomach’s top part (the pouch) from the rest of the stomach. The new pouch is approximately 30 milliliters and holds about 1 ounce (28 grams) of food.

During the second step (the bypass), the small intestine’s first portion is divided and the bottom end is connected to the newly created stomach pouch. Then the top portion of the divided small intestine is connected to the small intestine further down. This setup allows the digestive juices and stomach acids to mix with the food later in the digestive process.

There are several mechanisms involved in gastric bypass. First, similar to most bariatric surgical procedures, the newly created stomach pouch is smaller and can hold less food, which typically means less calories consumed. Additionally, because part of the small intestine is bypassed, the body absorbs fewer calories and nutrients from food. Most importantly, rerouting the food may change gut hormones, making you feel full with less food, suppress hunger and possibly improve Type 2 diabetes symptoms caused by obesity.

Weight loss surgery is recommended for individuals with a body mass index (BMI) equal to or greater than 35, regardless of presence, absence, or severity of 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. These testimonials reflect results achieved by these patients. As each case must be independently evaluated and managed, actual weight loss will vary.