Gastric sleeve surgery, medically referred to as sleeve gastrectomy, is one of the most commonly performed bariatric (weight loss) procedures worldwide. It’s a key surgical option for individuals living with severe obesity, especially when other non-surgical methods—such as dieting, exercise, or medication—have not delivered lasting results.
This procedure involves permanently removing approximately 75–80% of the stomach, leaving a thin, sleeve-like pouch. This smaller stomach limits how much food you can eat, reduces appetite by lowering the hormone ghrelin, and supports long-term weight loss.
At Complete Weight Loss Solutions, our multi-disciplinary team of bariatric surgeons, dietitians, psychologists, and nurses offers tailored support from pre-operative planning through to long-term aftercare. But how do you know if this surgery is the right path for you?
What Is Gastric Sleeve Surgery?
Gastric sleeve surgery is classified as a restrictive bariatric procedure—it doesn’t alter how your body absorbs nutrients but instead reduces the volume of food your stomach can hold. After surgery, most people feel full after smaller meals and experience less frequent hunger.
This surgery is performed laparoscopically (keyhole surgery), meaning it’s minimally invasive and generally involves a shorter hospital stay and recovery time compared to open procedures.
Who Is Gastric Sleeve Surgery Suitable For?
Gastric sleeve surgery may be considered for individuals with
- BMI of 40 or more
- or those with a BMI between 35 and 39.9 who also experience serious weight-related conditions such as type 2 diabetes, high blood pressure, fatty liver, or sleep apnoea.
- In some cases, those with a BMI between 30 and 34.9 may be eligible if other treatments have failed and significant health risks are present.
At Complete Weight Loss Solutions, we take a personalised approach—considering not just BMI, but your overall health, medical background, mindset, and readiness to embrace lasting change.
Are You a Suitable Candidate?
You may be considered a suitable candidate for gastric sleeve surgery if:
- You’ve been living with obesity for an extended period
- You’ve previously attempted diet, exercise, or medication without long-term success
- You’re aware of the potential risks and benefits of surgery
- You’re committed to lifelong changes in your eating habits, exercise, and overall lifestyle
- You are medically and psychologically fit for surgery
Our team conducts a full health evaluation, including consultations with a surgeon, dietitian, and psychologist. This ensures that surgery is both safe and appropriate for your personal situation.
Key Benefits of Gastric Sleeve Surgery
When combined with structured aftercare, gastric sleeve surgery can lead to transformative health outcomes:
- Substantial weight loss: Patients typically lose 50–70% of their excess body weight within the first 12–24 months.
- Remission or improvement of comorbidities: Many people see significant improvements—or even complete resolution—of conditions such as type 2 diabetes, high blood pressure, and obstructive sleep apnoea.
- Enhanced mobility and daily function: Reduced weight often leads to increased energy, improved joint health, and easier physical activity.
- Psychological benefits: Weight loss may contribute to increased self-esteem, reduced depression or anxiety, and improved overall quality of life.
Potential Risks and Considerations
While gastric sleeve surgery is generally safe and effective, it is still a major surgical procedure and involves certain risks. These may include:
- Bleeding or infection at the surgical site
- Leakage from the staple line along the stomach
- Nutritional deficiencies, especially in iron, vitamin B12, and folate
- Gastroesophageal reflux (heartburn)
- Rare complications that may require additional surgery
You will be closely monitored before and after your procedure to minimise these risks. Adhering to your post-operative nutrition and follow-up schedule is vital for long-term success and overall wellbeing.
Preparing for Surgery: What to Expect
At Complete Weight Loss Solutions, our pre-operative program ensures you’re physically and mentally ready for surgery. Your assessment will include:
- Comprehensive medical review – to evaluate your general health, medications, and any conditions that may affect your surgery
- Blood tests and imaging – to check for liver health, nutritional status, and anatomical considerations
- Dietitian-led sessions – to educate you on your pre-op and post-op diet, and help establish healthy eating habits
- Psychological assessment – to assess mental readiness and identify any emotional or behavioural factors that could impact your success
This preparation helps reduce surgical risks and sets you up for better outcomes post-surgery.
What Life Looks Like After Surgery
Recovery from gastric sleeve surgery typically involves:
- A short hospital stay (usually 1–3 days)
- A phased dietary progression: liquids → purees → soft foods → solid foods
- Adapting to smaller portion sizes and learning to eat mindfully
- Gradually increasing physical activity
You’ll work closely with our team to ensure proper nutrition, manage any side effects, and track your weight loss progress. Regular follow-up appointments are key to maintaining your health and achieving your goals.
Can gastric sleeve surgery lead to hair loss?
Temporary hair thinning or loss can occur several months after surgery, often due to rapid weight loss and nutritional deficiencies. This condition, known as telogen effluvium, typically resolves with proper nutrition and time.
Read More: How Common is Hair Loss After Bariatric Surgery?
Is long-term weight regain possible after gastric sleeve surgery?
Yes, while many patients maintain significant weight loss, studies indicate that up to 20% may experience weight regain over time. Factors include dietary habits, lifestyle choices, and the natural expansion of the stomach pouch. Ongoing support and adherence to lifestyle changes are essential for sustained results.
What are the risks of staple line leaks?
Staple line leaks are a serious but rare complication, occurring in approximately 1–2% of cases. These leaks can lead to infections or sepsis and may require additional surgery. Prompt medical attention is crucial if symptoms like fever, severe abdominal pain, or rapid heart rate occur post-surgery.
Can gastric sleeve surgery worsen acid reflux or cause new GERD symptoms?
Yes, some patients experience new or worsened gastroesophageal reflux disease (GERD) after surgery. This occurs because the procedure reduces stomach size without altering the esophageal sphincter, potentially leading to increased acid exposure. Patients with severe GERD or Barrett’s esophagus may be better suited for gastric bypass surgery.
What are the risks of developing gallstones post-surgery?
Rapid weight loss after gastric sleeve surgery increases the risk of gallstone formation. Some patients may require medication to prevent gallstones or even gallbladder removal if symptomatic.
Is Gastric Sleeve Surgery Right for You?
Gastric sleeve surgery can be a powerful intervention for individuals facing long-term obesity and its associated health complications. However, it’s not a quick fix. Long-term success depends on your willingness to embrace lifestyle changes and engage with ongoing support.
At Complete Weight Loss Solutions, we offer evidence-based, patient-centred bariatric care across Melbourne. From your initial consultation to surgery and long-term aftercare, our experienced team is here to help you regain control of your health.
Ready to take the next step?
If you’re exploring options for gastric sleeve in Melbourne, the team at Complete Weight Loss Solutions is here to support you with expert care every step of the way. Book your consultation today and begin your personalised weight loss journey with trusted bariatric professionals.