​Gastric Sleeve Surgery

The gastric sleeve is one of the most commonly performed weight loss procedures in Australia. Using keyhole surgery through 5 small incisions (5–15 mm), approximately 75% of the stomach is permanently removed, reshaping it into a narrow tube — or 'sleeve.' Dr Cocco performs this procedure at Westmead, Lakeview and Macquarie hospitals.

 

How is it performed?

The procedure is performed under general anaesthetic, typically taking 60–90 minutes. As a laparoscopic (keyhole) procedure, it involves less scarring and faster recovery compared to open surgery. The removed portion of the stomach is extracted and the remaining sleeve is stapled closed.

 

How does it work?

While reduced stomach size does limit food intake, the most significant effect is hormonal. Removing the stomach's outer curve eliminates much of the tissue that produces ghrelin — the hunger hormone — substantially reducing appetite and changing how the body regulates weight long-term.

 

Benefits

Patients typically lose 60–70% of their excess body weight over 12–18 months. Many experience significant improvement or complete resolution of obesity-related conditions including Type 2 Diabetes, sleep apnoea, high blood pressure, and joint pain.

 

Risks and considerations

As with all surgery, there are risks — including bleeding, infection, and leak from the staple line. The sleeve is permanent and cannot be reversed, though it can be converted to a bypass if needed. Dr Cocco will discuss all risks and benefits in detail at your consultation.

 

Recovery

Most patients stay 1–2 nights in hospital and can return to desk work within 2 weeks. A staged dietary progression (from fluids to soft foods to normal eating) is guided by Dr Cocco's dietitian. Heavy lifting is restricted for 4–6 weeks.