
30 October 2026
How Much Weight Do People Lose With a Gastric Sleeve?
Gastric sleeve patients lose 60 to 70 per cent of their excess weight within the first 12 to 18 months, with long-term results shaped by lifestyle and follow-up support.

Sleeve gastrectomy (gastric sleeve) is Australia's most common weight loss operation. Our Melbourne surgeons remove a large part of the stomach by keyhole surgery, leaving a sleeve that holds about 150 to 250mL, so a small meal satisfies you. You are supported by our multidisciplinary team of surgeons, a Specialist GP, dietitians, a psychologist and an exercise professional, with lifelong follow up. It is from $6,000 with adequate private health insurance. We are based in Dandenong North, with consulting rooms in Berwick, Frankston, Cranbourne and Warragul.
Sleeve gastrectomy is now the most common operation performed for obesity in Australia.
The normal stomach holds about 1.5 litres of food. We reduce the size of the stomach by resecting a large part of the stomach.
The resected part of the stomach is removed completely. The remaining “sleeve” of stomach holds only about 150–250mL.
The effect of the sleeve gastrectomy is that you can eat a very small meal, feel full and satisfied, and the hunger you would currently feel after eating such a small meal does not occur.
This operation goes by several names: gastric sleeve, stomach sleeve, sleeve gastrectomy and vertical sleeve gastrectomy (VSG) all describe the same stomach reduction procedure. It is performed as keyhole surgery by our Melbourne bariatric surgeons, with two bariatric trained surgeons at every operation.

The team at LapSurgery Australia are recognised for their exceptional and major contribution to the Government sponsored Bariatric Safety Registry (BSR). The BSR tracks surgical complications and provides an unbiased safety record for weight loss surgery.
We've created a series of videos to explain details about the weight loss surgery process.
Use our BMI calculator to check your eligibility and get a price estimate.
Launch BMI calculatorAn alternative procedure combining restriction with malabsorption for greater weight loss.
Learn moreA simpler bypass option with one surgical join and comparable results.
Learn moreOptions if a previous weight loss procedure has not achieved the desired result.
Learn moreReady to take the next step? Here is how to get started.
Common questions about gastric sleeve surgery
Generally a BMI of 35 or above, or 30 or above with a weight related health condition such as type 2 diabetes, sleep apnoea, high cholesterol, gout or liver disease. Lower thresholds apply for people of Asian descent. Our BMI calculator gives you an immediate indication.
On average, patients lose 60 to 70 per cent of their excess weight within the first 12 to 18 months. Individual results vary, and long term success depends on the lifestyle changes our multidisciplinary team supports you through.
From $6,000 for patients with private health insurance covering weight loss surgery. Our uninsured package for selected patients starts from $19,600 and includes cover for surgery related return visits to hospital within 28 days. A full written quote is provided after your consultation.
You progress from fluids to pureed foods to soft foods over approximately four to six weeks, then settle into a normal healthy diet in small portions. Our bariatric dietitian guides every stage, and daily multivitamins are recommended for life.
Most patients stay in hospital for one to two nights, return to light activities within two weeks and resume normal activities within four to six weeks.
Yes. Stomach sleeve, gastric sleeve, sleeve gastrectomy and vertical sleeve gastrectomy (VSG) all describe the same operation, in which the stomach is reduced to a narrow sleeve so a small meal leaves you full and satisfied.
No. The removed portion of the stomach cannot be restored, so the sleeve is permanent. It can, however, be converted to a gastric bypass if problems such as severe reflux develop or further weight loss is needed. This is discussed openly at your consultation.
Have more questions? We're here to help.
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30 October 2026
Gastric sleeve patients lose 60 to 70 per cent of their excess weight within the first 12 to 18 months, with long-term results shaped by lifestyle and follow-up support.

30 October 2026
A 2026 study found that four pre-surgery measurements can predict gastric sleeve weight loss outcomes with around 86% accuracy in the main testing group.

30 October 2026
A 2026 study found that people with severe obesity had higher pain tolerance and used less pain medication after gastric sleeve surgery.

30 October 2026
A 2026 Australian study found sleeve gastrectomy was linked to lower gestational diabetes rates but a higher chance of babies born smaller than expected.

4 November 2026
A study in the Annals of Surgery found that weight loss surgery may help reverse serious liver scarring, adding hope for patients with MASH cirrhosis.

30 October 2026
You may be able to use your superannuation to pay for weight loss surgery through compassionate release of super. Find out how to apply and what to expect.
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