Weight loss surgery has changed significantly over the years. Today, patients now have several options that can better fit their clinical needs and weight loss goals.
In this guide, the team at St George Obesity & General Surgery compares various weight loss surgical options, outlining how each procedure works and who they may be for.
1. Gastric sleeve
This type of weight loss surgery in Sydney involves eliminating a portion of the stomach to create a smaller, sleeve-shaped stomach. This includes the section of the stomach that produces ghrelin, a hormone that plays a key role in hunger regulation.
Gastric sleeve surgery is performed using laparoscopic or robotic surgery. Instead of a single large incision, the procedure is carried out through several small incisions, which allow the surgeon to access the abdominal cavity using specialised surgical instruments.
Who is it for?
This option is intended for people living with severe obesity (class III). Eligibility is assessed using your body mass index (BMI) alongside any obesity-related medical conditions you may have. Class III obesity is defined as a BMI of 40 or higher or a BMI of at least 35 when accompanied by at least one related health condition.
2. Gastric bypass
During a gastric bypass, the surgeon creates a small stomach pouch from the upper part of the stomach. This pouch is then directly connected to a section of the small intestine, allowing food to bypass the remaining stomach and the first portion of the intestine.
The smaller stomach pouch limits how much food can be eaten at one time, helping you feel full sooner. The procedure also alters gut hormones that regulate appetite, fullness and blood sugar control.
Who is it for?
According to a study done by researchers in the US, candidates must have a BMI over 35, regardless of the presence, absence or severity of comorbidities. It may also be suitable for patients with type 2 diabetes and a BMI of 30 kg/m² or higher.
3. Revision bariatric surgery
Revision bariatric surgery is an umbrella term used to describe follow-up weight loss procedures performed in patients who have previously undergone any type of bariatric surgery. Rather than being a standardised operation, it involves modifying, correcting or converting the original surgery to further optimise results or resolve complications.
Who is it for?
This weight loss surgery option may be ideal for those who have experienced insufficient weight loss or weight regain after their initial bariatric surgery. Ideal candidates are also those who continue to live with obesity-related health conditions or have experienced anatomical changes.
4. Gastric balloon
A gastric balloon is a temporary, non-surgical weight loss procedure where the surgeon positions a silicone balloon in the stomach, usually via endoscopy, and fills it with saline to create a feeling of fullness. It reduces stomach capacity, helping support portion control and reduced food intake. The balloon typically remains in place for four to six months, during which time patients follow a structured dietary and lifestyle program.
Who is it for?
Ideal candidates have a BMI of 27 to 35. This option is also ideal for those who prefer a less invasive alternative to bariatric surgery that permanently alters anatomy.
Book an initial consultation at our weight loss clinic in Sydney
Weight loss surgery is not one-size-fits-all. The right approach is shaped by your health, goals, lifestyle, medical history and overall weight loss journey. At St George Obesity & Surgery, we take the time to assess these factors and recommend the most appropriate procedure for you. Our surgical team, led by Dr Qiuye Cheng (MED0001667801), is experienced in robotic surgery for bariatrics and provides ongoing care and structured follow-up plans to ensure sustainable outcomes.
Arrange an appointment at our weight loss clinic in Sydney to discuss your concerns and explore your options today.
