Bariatric and metabolic surgery
Bariatric surgery — increasingly called metabolic surgery, because its effects extend well beyond weight — produces the largest and most durable weight loss of any current treatment, and often substantially improves type 2 diabetes and liver disease alongside it.
It's also a permanent alteration to your digestive system, requiring lifelong nutritional follow-up. Both facts are true at once, which is why assessment is thorough and involves a multidisciplinary team rather than a surgeon alone.
How it works is not simply mechanical restriction. These procedures change gut hormone signalling in ways that reduce appetite and improve insulin sensitivity — which is why metabolic improvements often appear before significant weight is lost.
Who it's for is determined by clinical criteria based on BMI and related conditions, together with an assessment of whether you can sustain the follow-up and nutritional requirements afterwards.
Pathways in Australia differ considerably. Public access is limited and waiting lists are long; most procedures are performed privately, with costs varying by procedure, surgeon and health fund cover. Out-of-pocket costs can be substantial and should be confirmed in writing before you commit.
In this section:
- Weight regain after bariatric surgery
- Non-surgical options
Related: Medical weight management · Bariatric surgery and liver health Next: Find a bariatric service →