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Considering bariatric surgery and not sure where to start?
At Healthy Weight Australia, we’re often answering questions about gastric sleeve vs bypass pros and cons—the comparative cost, the recovery time, the long-term results, and, most importantly, how to know which surgery is right for you.
Let’s take a look at the benefits of gastric sleeve vs bypass in detail. Some of the following information might make it clear which avenue is for you, or you might have more questions. If you’re still not sure, Healthy Weight Australia can help.
We are a medical group made up of the finest physicians, surgeons and Allied Health professionals across Australia. Our team of experts will help you discover a program that aligns perfectly with your personal goals.
Call our helpful team to learn more, find out about next steps, and start your weight loss journey.
What is gastric bypass surgery?
- Procedure : The stomach is reduced and connected directly to the small intestine. This means food bypasses most of the stomach and part of the intestine, helping you feel full sooner and absorb fewer calories
- Recovery Time : 2 to 4 weeks
- Risks and Complications : Possibility of dumping syndrome, nutritional deficiencies and hypoglycaremia.
- Weight Loss Results : People can expect to lose 60-80% of additional weight within the first 12 months.
What is gastric sleeve?
- Procedure : The surgeon removes a large (up to 80%) section of the stomach, providing a tube-shaped stomach (sleeve).
- Recovery Time : 3 weeks
- Risks and Complications : Reduced risk of dumping syndrome, increased risk of reflux.
- Weight Loss Results : People should expect to lose weight at a slower, steadier rate. In the first 12 months, patients may possibly lose 60-70% of excess weight.
We offer two gastric sleeve options at Healthy Weight : Laparoscopic sleeve and endoscopic sleeve.
| Aspect | Gastric Bypass | Gastric Sleeve |
|---|---|---|
| Surgical Method | Small stomach pouch created and rerouting of the small intestine. | Removal of about 80% of the stomach to create a sleeve-shaped stomach. |
| Stomach Size | Small stomach pouch (around 15-30 mL). | Smaller stomach (about 80% removed), leaving a sleeve-shaped stomach. |
| Digestive Changes | Diverts food past part of the stomach and small intestine, affecting digestion and absorption. | No diversion; food passes through the stomach normally, but with reduced capacity. |
| Weight Loss | Rapid weight loss, typically 60-80% of excess weight within the first 12 months. | Steady weight loss, typically 60-70% of excess weight within the first 12 months. |
| Risk of Nutrient Deficiency | Higher risk due to malabsorption, especially of vitamins and minerals (e.g. B12, iron). | Lower risk, but still potential for deficiencies (e.g. vitamin D, B12). |
| Surgical Duration | 60-90 minutes | 45-60 minutes |
| Hospital Stay | 2 days | 2 days |
| Long-Term Maintenance | Requires lifetime vitamin and mineral supplementation. | Requires some vitamin supplementation, but fewer compared to bypass. |
| Reversibility | Not reversible due to the intestine rerouting. | Irreversible due to the removal of a portion of the stomach. |
| Risk of Dumping Syndrome | Higher risk, where undigested food moves too quickly into the small intestine, causing nausea, dizziness, and diarrhoea. | No risk of dumping syndrome. |
| Suitable for | Ideal for anyone with a BMI of 40 or above, or BMI of 30 and above with obesity related conditions. | Ideal for anyone with a BMI of 40 or above, or BMI of 30 and above with obesity related conditions. |
| Surgical Complications | Higher risk of long-term complications, such as bowel obstruction, hernias, and ulcers. | Generally fewer long-term complications, but risks include leaks and bleeding. |
| Estimated Cost | Around AUD $18,000 – $22,000 (including procedure fees from the surgeon, anaesthetist and surgical assistant, 2 night hospital stay, appointments with a bariatric physician and surgeon, allied health appointments, and nurse practitioner appointments) | Around AUD $17,000 – $20,000 (including surgical procedure, clinical psychologist consultation, anaesthetist, surgical assistant, pathology services, pre-operative assessment with a specialist physician and follow-up dietician consultations) |
| Estimated Weight Loss (12 months) | Up to 60-80%* of total weight | Up to 60-70%* of total weight |
*Weight loss results vary from person to person
Gastric sleeve vs bypass recovery time
As you can see in the table above, recovery time for bypass surgery vs gastric sleeve is similar, and you can expect to be home and on your way to recovery in 2 days in both cases.
That being said, gastric bypass carries a slightly higher risk of complications, including a slightly elevated risk of developing dumping syndrome.
As far as gastric bypass vs sleeve long-term results, bypass surgery sees slightly more significant weight loss over 12 months, at around 60-80% of total excess weight lost.
On the higher end of this scale, a patient weighing 120 kg could lose as much as 50 kg. Gastric sleeve surgery boasts its own impressive results, with patients losing 60-70% of total excess weight.
This means (at 70% loss of excess weight) that a person weighing 120 kg could lose up to 35kg.
Gastric sleeve vs bypass cost
When it comes to gastric bypass vs sleeve cost, there are a few things to keep in mind.
In general, gastric bypass tends to be more expensive because it’s a more complex procedure that involves rerouting the intestines in addition to reducing the stomach size.
The surgery also requires more follow-up care, which can drive up the overall cost.
Gastric sleeve surgery is less costly because it’s a simpler procedure with fewer potential complications.
Both surgeries are significant investments, and the total cost will depend on factors like the hospital, surgeon, and location.
Health insurance can sometimes cover part of the expenses, but it’s important to check what’s included, as coverage can vary widely depending on the insurer and the medical necessity.
Additionally, there’s the cost of long-term care, including vitamins, nutritional counselling, and potential follow-up surgeries, which can add up over time.
Gastric bypass vs gastric Sleeve : Which Surgery Is Better?
Both gastric bypass and gastric sleeve surgeries can be powerful tools in achieving long-term weight loss.
Both treatments can help reverse obesity-related conditions, including :
- Diabetes
- High blood pressure
- High cholesterol
- Sleep apnoea
Both procedures can prevent the development of certain cancers, stroke and heart attack
You will need to work alongside your doctor to decide on the best weight loss procedure for you, but here are some stats that might help you lean one way or the other :
- Gastric bypass patients get rid of between 60-80% of excess body weight within 12 months, on average.
- Gastric sleeve patients lose around 60-70% of their excess body weight within 12 months, on average.
- Both procedures are recommended for anyone with a BMI of 40 above.
Still not sure?
Learn more about our surgery options by contacting our friendly team today.
