Gastric Sleeve Surgery Sydney | Specialist Sleeve Gastrectomy Surgeon

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

It is a minimally invasive (keyhole) operation that reduces stomach size and alters hunger hormones, helping patients lose weight and improve obesity-related health conditions such as type 2 diabetes, high blood pressure, and sleep apnoea.

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

• Appropriate procedure selection

• Long-term weight loss outcomes

• Structured post-operative care

• Minimising complications

Surgery is performed at leading private hospitals including:

• Prince of Wales Private Hospital (Randwick)

• Mater Hospital (North Sydney)

• East Sydney Private Hospital (Woolloomooloo)

Consultations are available in Newtown or via Telehealth.

Schedule a consultation: Call 02 9565 5514. Appointments are available within the next 1-2 weeks.

What Is Gastric Sleeve Surgery?

Gastric sleeve surgery involves removing approximately 70–80% of the stomach, leaving a narrow gastric “sleeve”.

This results in:

• Reduced food intake

• Reduced hunger due to lower ghrelin (the hunger hormone) levels

• Improved appetite control

Unlike gastric bypass, the digestive pathway remains unchanged, making it a widely accepted and effective treatment for obesity and related metabolic conditions.

Learn more about Bariatric Surgery in Sydney

How Gastric Sleeve Surgery Works

Gastric sleeve surgery works through two primary 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, helping reduce hunger and improve satiety.

Who Is Suitable for Gastric Sleeve Surgery?

Gastric sleeve surgery may be appropriate for patients who:

• Have a BMI of 35 or greater

• Have a BMI of 30–34 with obesity-related conditions

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

• Are committed to long-term lifestyle and dietary changes

Suitability is determined following specialist assessment.

Learn more about obesity, weight-related conditions and treatment options.

Patients may also benefit from structured pre-operative and post-operative support programs available through BodyFree Weight Loss Clinic.

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.

For structured dietary guidance, support programs, and ongoing care pathways, patients can access multidisciplinary support through BodyFree Weight Loss Clinic.

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 Bariatric 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.

Why Choose a Specialist Gastric Sleeve Surgeon?

Choosing a specialist upper GI surgeon ensures:

• Appropriate patient selection

• Correct procedure choice

• Safe surgical technique

• Management of complex or revision cases

• Long-term follow-up and support

Structured Bariatric Care and Support

Successful outcomes require more than surgery alone.

For structured bariatric programs, multidisciplinary care, and ongoing support:

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.

Early assessment allows for personalised planning and safe preparation for long-term success.

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

FAQs – Gastric Sleeve Surgery

Related Upper GI Surgical Services

Dr Joseph also provides:

• Gallbladder Surgery in Sydney – laparoscopic cholecystectomy

• Hernia Surgery in Sydney – inguinal, ventral and complex repairs

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 →