Is bariatric surgery available on the NHS?
Weight loss surgery is available on the NHS, but the criteria are strict and the timeline is long. This guide explains who qualifies, what the process involves, and how your GP can support a referral.
What is bariatric surgery?
Bariatric surgery is the clinical term for weight loss surgery. There are several types, including gastric bypass, sleeve gastrectomy, and gastric band procedures. They all work by changing the anatomy of the digestive system to reduce how much food you can eat or absorb.
These are significant surgical procedures carried out under general anaesthetic. They are not a first resort — they are considered when other approaches have not produced sufficient results.
Who qualifies for NHS bariatric surgery?
NHS eligibility criteria
- A BMI of 40 or above — OR a BMI of 35–39.9 with a serious condition like type 2 diabetes or high blood pressure
- All other weight loss treatments (diet, exercise, medication) have been tried and have not worked
- You are fit enough to have a general anaesthetic and surgery
- You have been receiving treatment in a specialist obesity service
- You agree to long-term follow-up after surgery
How long does the process take?
This is where many patients are surprised. NHS bariatric surgery is not a quick process. You should expect 12 to 18 months of pre-operative assessment before any procedure takes place. This includes:
- Physical health checks and tests
- Psychological assessment to ensure you are mentally prepared
- Input from dietitians and specialist nurses
- A structured period of supervised weight management
This isn't designed to make the process difficult — it's there to ensure surgery is safe and that you have the support in place to make the most of it long-term.
Waiting times
NHS waiting times for bariatric surgery vary significantly by region and trust. Your GP can give you a realistic picture of what to expect in the current NHS landscape. In some cases, patients choose to explore private options while on the NHS list.
What are the risks?
All surgery carries risk, and bariatric procedures are no different. Common short-term risks include infection, blood clots, and anaesthetic complications. Longer-term, patients may experience nutritional deficiencies (particularly in B12, iron, and calcium) that require lifelong supplementation. Your surgical team will explain the full risk profile as part of your assessment.
How do I start the process?
The process begins with your GP. They will discuss whether you meet the initial criteria and, if appropriate, make a referral to a specialist obesity service. At Abbamoor, we can support this referral for eligible patients.
Ready to have an honest conversation?
If you think bariatric surgery might be the right path for you, register with Abbamoor and book a GP appointment to discuss your options.