Gastric Sleeve Surgery In Sydney – Laparoscopic Sleeve Gastrectomy

What Is Gastric Sleeve Surgery?

Gastric Sleeve surgery (Sleeve Gastrectomy) is the most commonly performed bariatric procedure for patients seeking effective, long-term weight loss.

The procedure involves removing approximately 70–80% of the stomach, leaving a narrow gastric “sleeve”. This reduces food intake and significantly lowers hunger by decreasing production of the hormone ghrelin.

Gastric Sleeve surgery does not alter the normal digestive pathway, making it a widely accepted and effective treatment for obesity and related metabolic conditions.Who Is a Candidate for Bariatric Surgery?

Gastric Sleeve surgery is one of the most commonly performed bariatric procedures. Learn more about Bariatric Surgery in Sydney.


Specialist Gastric Sleeve Surgeon In Sydney

Dr David Joseph is a specialist upper gastrointestinal and laparoscopic surgeon in Sydney with extensive experience in minimally invasive gastric sleeve surgery.

He performs Laparoscopic (keyhole) Sleeve Gastrectomy with a focus on:

  • Patient safety

  • Long-term weight loss outcomes

  • Structured post-operative care

  • Minimising complications

Surgery is performed at leading private hospitals in Randwick, North Sydney, and Woolloomooloo.

Consultations are available in Newtown or via Telehealth.

Schedule a consultation: Call 02 9565 5514. Urgent appointments are available.

How Gastric Sleeve Surgery Works

Gastric Sleeve surgery works through two key mechanisms:

Reduced Stomach Capacity

The smaller stomach limits how much food can be eaten at one time.

Hormonal Changes

Removal of part of the stomach reduces ghrelin production, which helps decrease hunger and improve appetite control.

Unlike gastric bypass, food passes through the digestive system in a normal pathway without intestinal rerouting.


Who Is Suitable For Gastric Sleeve Surgery?

Gastric Sleeve surgery may be appropriate for patients who:

  • Have a BMI over 35

  • Have a BMI over 30-34 with obesity-related conditions (e.g. type 2 diabetes, sleep apnoea, hypertension)

  • Have not achieved sustained weight loss through non-surgical methods

  • Are committed to long-term dietary and lifestyle changes

A full assessment is required to determine suitability.

Expected Weight Loss And Health Benefits

Most patients experience significant and sustained weight loss following Gastric Sleeve surgery.

Typical outcomes include:

  • 60–70% excess weight loss within 12–18 months

  • Improvement or remission of type 2 diabetes

  • Reduced blood pressure and cholesterol

  • Improved mobility and joint pain

  • Better sleep and reduced sleep apnoea

Results depend on long-term lifestyle changes and follow-up care.

Recovery After Gastric Sleeve Surgery

Recovery is typically straightforward following laparoscopic surgery.

Hospital stay: usually 1–2 nights
Walking: same day
Light activity: within several days
Return to work: 1–2 weeks (depending on job)
Vigorous activity: after 3–4 weeks

Diet progresses gradually from liquids to soft foods and then to a balanced diet under dietitian guidance.

Risks And Considerations

Gastric sleeve surgery is generally safe when performed by an experienced specialist, but all surgery carries risks.

Potential risks may include:

  • Bleeding

  • Infection

  • Leak from staple line

  • Nutritional deficiencies (e.g. B12, iron)

  • Reflux symptoms

Lifelong follow-up and vitamin supplementation may be required.

All risks are discussed in detail during consultation.

Gastric Sleeve vs Gastric Bypass

Gastric Sleeve surgery is often recommended as a first-line bariatric procedure due to its simplicity and effectiveness.

However, Gastric Bypass may be more suitable for some patients, particularly those with:

  • Significant reflux

  • More severe metabolic disease

  • Higher BMI (over 50)

  • Previous bariatric procedures

Learn more about Gastric Bypass Surgery in Sydney

Other Bariatric Surgery Options

Depending on your individual situation, other procedures may be considered:

  • Gastric Bypass Surgery

  • Revision Bariatric Surgery

See all options on our Bariatric Surgery in Sydney page.

Learn More About Bariatric Surgery Pathways

Gastric Sleeve surgery is part of a comprehensive bariatric care pathway that includes pre-operative preparation, structured follow-up, and long-term support.

For information about program options, support pathways, and patient journey:

Visit BodyFree Weight Loss Clinic

Book A Gastric Sleeve Consultation In Sydney

If you are considering Gastric Sleeve surgery, a specialist consultation is the first step.

Dr David Joseph provides personalised assessment and guidance to determine whether Sleeve Gastrectomy is the right option for you.

Call 02 9565 5514 or complete the form below to book your consultation.
Urgent appointments are available.

request an appointment

Related Upper GI Surgical Services

Dr Joseph also provides:

Learn more about the broader bariatric program offered by Dr Joseph at the BodyFree Weight Loss Clinic.

Dr Joseph is a fellowship-trained specialist Upper GI surgeon.
Learn more about Dr David Joseph →

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