Weight loss surgery options

There are a number of options for weight loss surgery and we will assist in choosing the one that best suits you.

At Discover Weight Loss, we provide a number of weight loss surgery options including gastric sleeve and gastric bypass, as well as revisional procedures.

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Gastric Sleeve
One Anastomosis Gastric Bypass
Roux en Y Gastric Bypass
Revisional Surgery
Package deals


Gastric Sleeve

$20,481 incl GST (see “Package deals” below)

The gastric sleeve is currently the most popular weight loss procedure around the world.

configuration of gastric sleeve

The operation involves removing 80-90% of your stomach, resulting in a new stomach volume of approximately half a cup (100-150ml).

A smaller stomach means that you can only eat a small amount of food and it is therefore considered a “restrictive” operation.

The portion of stomach removed produces ghrelin (a hormone that makes you feel hungry). This leads to a drop of these levels in your body and a loss in your appetite.

As a consequence of a reduction in ghrelin levels and a smaller stomach, you don’t feel hungry, and when you do eat, you can only eat small volumes. This ultimately leads to weight loss. On average, you will lose between 60-70% of your excess weight.

Some of the specific complications of laparoscopic gastric sleeve include:

  • Staple-line leak (1-2%) – this may occur within the first two weeks after surgery. The stomach contents can leak into the abdomen due to failure of the staple line to heal.  Further surgery/procedures may be necessary as well as a prolonged hospital stay.
  • Stricture/stenosis (1-2%) – a narrowing may occur half way down the sleeve.  This can occur several months after the operation. This may require stretching up with a balloon, or placement of a stent (tube) within the sleeve, and removal 4 weeks later. Occasionally, revisional surgery may be required.
  • Acid reflux – you may get symptoms of heartburn.  Most times, this can be treated with medications. Revisional surgery is sometimes necessary.
  • Nutritional deficiencies – even though you will need to take multivitamin supplements, you can become low in certain vitamins or minerals. Additional supplementation may be necessary. You will require lifelong follow-up and blood tests to monitor for potential deficiencies.
  • Port site pain – particularly on the right side of the abdomen (associated with removal of stomach). This may last for several weeks after surgery.

One Anastomosis Gastric Bypass

$22,564 incl GST (see “Package deals” below)

The one anastomosis gastric bypass is also called the mini gastric bypass or single anastomosis gastric bypass.

This involves the creation of a new stomach (from your original stomach) and joining a loop of small bowel to the new stomach. Food and fluid bypasses the original stomach and part of the small bowel.

configuration of one anastomosis gastric bypass

Weight loss occurs due to a restriction in oral intake, malabsorption of nutrients, and alterations to the actions of gut hormones on the bowel.

On average, you will lose between 60-80% of your excess weight.

Some of the specific complications of laparoscopic one anastomosis gastric bypass include:

  • Anastomotic leak (1-2%) – stomach fluid may leak out into the abdomen at the join created during this procedure, due to failure of the join to heal. This may require further surgery/procedures and a prolonged hospital stay.
  • Marginal ulceration – this is an erosion/ulcer of the small bowel joined to the gastric pouch, similar to a stomach ulcer. This may cause pain in the upper abdomen or chest. Most times this can be treated with medications. Occasionally, this requires revisional surgery.
  • Stomal stenosis – a narrowing at the join between stomach and small bowel. You may develop vomiting and rapid weight loss, due to inability of food and/or fluids to pass through the narrowed area. This can be treated by stretching the narrowing up with a balloon, or placement of a stent (tube), and removing it 4 weeks later. Occasionally, this requires revisional surgery.
  • Stomal dilation – a widening at the join between stomach and small bowel. You may feel loss of restriction and be able to eat more. This can be fixed by narrowing the opening with stitches endoscopically (via a scope placed through the mouth). Occasionally, this may require revisional surgery.
  • Internal hernia (<1%) – bowel may get trapped in a space created during the formation of the gastric bypass. This may cause a blockage of the small bowel (obstruction) or lead to a lack of blood supply to the small bowel (strangulation). This is an emergency. You must go to your local hospital immediately if you have significant abdominal pain lasting more than one hour, with or without vomiting.
  • Bile reflux (<1%) – bile (fluid produced by the liver to help in digestion of fatty foods) may go up the oesophagus and cause symptoms similar to that of acid reflux/heartburn. This can be treated with medications. Occasionally, this may require revisional surgery.
  • Dumping syndrome – a cluster of symptoms including nausea/vomiting, rapid heartbeat, sweating, flushing, light-headedness, abdominal cramps, and diarrhoea. This is due to eating too much or eating foods high in sugar. This can be fixed by modifying your eating habits.
  • Nutritional deficiencies even though you will need to take multivitamin supplements, you can become low in certain vitamins or minerals. Additional supplementation may be necessary. You will require lifelong follow-up and blood tests to monitor for potential deficiencies.

Roux en Y Gastric Bypass

$24,849 incl GST (see “Package deals” below)

The roux en y gastric bypass has evolved over the last 50 years.

Creating the gastric bypass involves joining small bowel to a small stomach created from the original stomach. Food and fluid mixes with digestive juices from the bypassed stomach and small bowel via a second join further down.

configuration for Roux en Y gastric bypass

This results in restriction of oral intake, some malabsorption of nutrients, and alterations to gut hormone action on the bowel.

Weight loss is achieved through the combination of the above actions.

On average, you will lose 70% of your excess weight.

Some of the specific complications of laparoscopic roux en y gastric bypass include:

  • Anastomotic leak (1-2%) – stomach fluid may leak out into the abdomen at either of the two joins created during this procedure, due to failure of the joins to heal. This may require further surgery/procedures and a prolonged hospital stay.
  • Marginal ulceration – this is an erosion/ulcer of the small bowel joined to the gastric pouch, similar to a stomach ulcer. This may cause pain in the upper abdomen or chest. Most times this can be treated with medications. Occasionally, this requires revisional surgery.
  • Stomal stenosis – a narrowing at the join between stomach and small bowel. You may develop vomiting and rapid weight loss due to inability of food and/or fluids to pass through the narrowed area. This may require stretching up with a balloon, or placement of a stent (tube) and removal 4 weeks later. Occasionally, this requires revisional surgery.
  • Stomal dilation – a widening at the join between stomach and small bowel. You may be able to eat more. This may be fixed by narrowing the opening with stitches endoscopically (via a scope placed through the mouth). Occasionally, this may require revisional surgery.
  • Internal hernia (2%) – bowel may get trapped in spaces created during the formation of the gastric bypass, even though these spaces are routinely closed. This may cause a blockage of the small bowel (obstruction) or lead to a lack of blood supply to the small bowel (strangulation). This is an emergency. You must go to your local hospital immediately if you have significant abdominal pain lasting more than one hour, with or without vomiting.
  • Dumping syndrome – a cluster of symptoms including nausea/vomiting, rapid heartbeat, sweating, flushing, light-headedness, abdominal cramps, and diarrhoea. This is usually due to eating too much or eating foods high in sugar. This can be fixed by modifying your eating habits.
  • Nutritional deficiencies – even though you will need to take multivitamin supplements, you may become low in certain vitamins or minerals. You may need additional supplementation. You will require lifelong follow-up and blood tests to monitor for potential deficiencies.

Revisional Surgery

$POA – dependent on difficulty of the revision.

If you have had a previous weight loss operation (such as a gastric band) and developed a complication, revisional surgery may be an option.

The type of revision will be dependent on your previous surgery and the problem you present with.

You will need to have a number of investigations to help identify any problems which can be fixed with surgery.

Revisional surgery is performed to improve symptoms from complications, not for additional weight loss.


Package deals

Follow-up is just as important as the surgery itself in achieving the best results possible. It keeps you motivated and allows us to support you on your journey, particularly during a time of significant change.

Our comprehensive follow-up programme (18 appointments included at no additional cost) over the first two post-operative years, is shared between our surgeon, bariatric clinician, dietitian, and health and wellness coach/personal trainer.

Your follow-up is tailored to your circumstances and can be done either as a face-to-face in clinic, or via telephone, if this suits you best.

All packages include:

  • Surgeon, anaesthetist, and hospital fee
  • 2 nights hospital stay in a private room with ensuite*
  • Follow-up (a total of 18 appointments over 2 years) with:
    • surgeon
    • dietitian
    • health & wellness coach / personal trainer
    • bariatric clinician
  • Monitoring for clinical and nutritional complications
  • Daily motivational text messages
  • Fitness programme tailored to your needs and location

*additional nights will incur extra costs


Find out more about what’s involved in your weight loss journey.