Using Body Mass Index (BMI) isn't perfect but it does give us some guidance as to the risk to your health of your weight.


National guidelines in Australia recommends that weight loss surgery is an option if your BMI is more than 40 kg/m2. The BMI cut-off is lowered to 35 if you have developed some medical condition because of obesity. But, careful thought may be given to weight loss surgery even if your BMI is between 30 and 35 (especially if you have Type II diabetes for example) as the risks to your health are higher at lower BMIs. 


  1. What is your BMI?

  2. Do you have any conditions related to your weight?

  3. What have you done so far to try to lose or control your weight?

Basically there are 3 bariatric operations that we use in Australia for weight loss: the band, a sleeve or a bypass. All of these are performed laparoscopically (by keyhole surgery). 

  • The Gastric Band has fallen out of favour over the last few years. It isn't associated with as good weight loss as the others, it's 'high maintenance' and needs a lot of work to get to work well and may need extra operations to keep it working properly. We are now seeing that around 30% of bands need to be removed. We no longer recommend bands.

  • The Sleeve Gastrectomy has become hugely popular in Australia. Over 20,000 sleeves were done last year!

  • Finally, Gastric bypasses. In one form or another these operations have been around since the 1960s. They are not a 'gold' standard' but they are the standard that other operations are measured against.

Jon & Lachy are experts and will evaluate your individual medical requirements and the likely effects of the different surgeries for you. They may recommend one particular operation based on their knowledge and experience, but they will take into account your preference so that the choice of operation is really a shared decision.