Gastric Bypass Surgery-Long Term Weight Loss

Gastric Bypass Surgery is a proven form of weight loss. Patients can expect to lose 75-80% of their excess body weight in the first two years following surgery. It is a more extensive surgical procedure than the gastric band and sleeve gastrectomy and is non-reversible.

Gastric bypass operations are a surgically proven form of weight loss when combined with a supervised diet, physical activity and behaviour modification programme. They are generally recommended for patients with higher BMI i.e. a Body Mass Index of 40 or over.

There are several varieties of gastric bypass, but all involve the creation of a small stomach pouch to restrict food intake and reduce the absorption of calories and nutrients from food which causes effective weight loss results.

The considerable health benefits of a gastric bypass include:

  • Most type II diabetics will be cured
  • Major improvements in other weight associated conditions such as sleep apnoea, asthma, joint pain, arthritis and fatigue
  • Reduces the risk of heart disease and cancer
  • 70-80% of patients suffering with hypertension will no longer need to take medication
  • Cholesterol levels will fall
  • And you will look 'slim and smart

There are 2 main types of Gastric Bypass procedure, both of which essentially reduce the size of the stomach pouch so that less food is absorbed.

1. Roux-en-Y Gastric Bypass (RGB)
With this procedure a small stomach pouch is created by stapling part of the stomach together or vertical banding. This limits how much food you can eat. Then, a Y-shaped section of the small intestine is attached to the pouch to allow food to bypass the duodenum as well as the first portion of the jejunum. This is demonstrated below:

2. Biliopancreatic diversion Gastric Bypass (BPD)
In this more complicated version, portions of the stomach are removed and the small pouch that remains is connected directly to the final segment of the small intestine. This means that most of the small intestine (duodenum and jejunum) is bypassed, resulting in substantial reductions in calorie and nutrient absorption.











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