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Gastric Bypass Surgery

The Roux-en-Y gastric bypass is the most commonly performed bariatric surgery in the world with around 100,000 procedures being performed each year. It combines the two types of surgery being both a restrictive and partly malabsorptive operation.

Stapling is used to create a smaller, upper stomach pouch which restricts the amount of food able to be consumed.

A portion of the small bowel is bypassed which delays food from mixing with digestive juices to avoid complete absorption.

To learn more about Gastric Bypass Surgery

How Much Weight Can I Lose With Gastric Bypass Surgery?

You Can Expect To Lose Up To 70% of Excess Body Weight In 12 Months.*
On average, patients lose 70% with the Gastric Bypass Surgery with studies showing after 10-14 years patients have maintained 60% of excess body weight loss*.
Ready To Lose Your Excess Weight?
*Individual results may vary. Refer to our disclaimer
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How Does Gastric Bypass Surgery Help Me Lose Weight?

The Gastric Bypass Surgery helps you lose weight in these ways:

  1. Dramatic weight loss results in under 12 months
  2. Weight loss results expected to last up to 2 years or more
  3. Best for co-morbidity diseases due to accelerated weight loss results

See How Gastric Bypass Surgery Can Help You.

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What Does Weight Loss Surgery Cost?

The costs of having weight loss surgery are made up of a number of sources:

  • Hospital charges for bed stay
  • Hospital charges for operating theatre session
  • Equipment used in the operating theatre session. This includes the gastric band itself or for other weight loss operations, the stapling devices.
  • Professional fees charged by the surgeon, anaesthetist and assistant

For an estimate of total weight loss surgery costs, the best way is to contact us directly for a discussion of your particular circumstances and insurance coverage.

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Find out how weight loss surgery can help you.

Am I a good candidate for weight loss surgery?

Guidelines for weight loss surgery are established by obesity surgical societies (OSSANZ and IFSO) and government bodies (National Institutes of Health) to ensure the safety and efficacy of the operations.

You may be a candidate if:

  • You are more than 40kg above your ideal weight
  • Your BMI is above 40kg/m2 or,
  • Your BMI is above 35 and you have a medical condition associated with your weight, such as diabetes
Check with our BMI Calculator to see if you qualify for weight loss surgery.
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Gastric Bypass Surgery FAQs

Gastric bypass surgery is a weight-loss procedure that involves creating a small stomach pouch and rerouting part of the small intestine. This surgical intervention significantly reduces calorie absorption and food intake, leading to substantial weight loss and improvement in various obesity-related health conditions. While it offers a promising solution for many individuals, it's crucial to understand the procedure, its potential benefits, risks, and long-term commitment required for successful outcomes.

  • Gastric bypass creates a small stomach pouch and reroutes part of the small intestine, reducing calorie absorption and food intake.

  • Gastric bypass patients typically lose 60–80% of their excess weight within 12–18 months post-surgery.

  • It often improves or resolves obesity-related conditions like type 2 diabetes, hypertension, sleep apnoea, and joint pain.

  • Most patients resume light activities within 1–2 weeks and return to normal routines within 4–6 weeks.

  • You’ll need to follow a structured diet plan that progresses from liquids to pureed foods and then solids. Long-term, portion control and balanced meals are essential.

  • As with any surgery, risks exist, including infection, blood clots, and nutritional deficiencies. These are minimised with proper aftercare and monitoring.

  • Yes, vitamin and mineral supplements are essential to prevent deficiencies, as the surgery affects nutrient absorption.

  • Reversal is possible but rare. It’s typically reserved for medical complications and should only be performed by a skilled bariatric surgeon.

  • Gastric bypass alters the digestive process by rerouting the intestines, while gastric sleeve involves reducing the stomach size without changing digestion.

  • Long-term success depends on adopting healthy eating habits, regular exercise, and attending follow-up appointments to monitor progress.