Common questions about obesity treatment, weight-loss surgery and what to expect. This page is general information, not individual medical advice — suitability for any treatment requires a personal medical assessment.
Eligibility and BMI
How do I know if I am eligible for weight-loss surgery?
Eligibility is assessed clinically. It considers body mass index, obesity-related conditions such as type 2 diabetes, high blood pressure or sleep apnoea, what you have already tried, your general health and fitness for anaesthesia, and your readiness for long-term follow-up.
What does BMI actually tell me?
BMI is a screening figure calculated from height and weight. It does not measure body composition, distribution of fat, or metabolic health, and it can misclassify very muscular people. It is a starting point for a conversation, not a diagnosis.
Is there a weight I need to reach before being considered?
There is no single threshold that applies to everyone. Assessment looks at the whole clinical picture rather than one number.
Procedures
What is the difference between the main bariatric procedures?
Bariatric operations differ in how much they restrict stomach volume and how much they alter the route food takes and gut hormone signalling. That affects weight loss, effect on conditions such as diabetes, nutritional consequences and specific risks. The bariatric surgery page explains the principles.
What is the Allurion Balloon?
A swallowable gastric balloon placed without surgery or endoscopy. See the Allurion Balloon page.
What does robotic surgery change?
The platform, not the operation. It provides magnified three-dimensional vision, articulated instruments and tremor filtering. The surgeon controls every movement. See robotic bariatric surgery.
Safety and risks
Is weight-loss surgery safe?
Bariatric surgery is well established and performed routinely, but it is still surgery and carries genuine risks including bleeding, infection, blood clots, anaesthetic complications and procedure-specific complications. Your individual risk depends on your health and the procedure, and is discussed before any decision.
Are the effects permanent?
Some procedures cannot be reversed. Weight loss itself is not permanent by default — regain is possible, particularly without follow-up and sustained dietary change.
Recovery and nutrition
How long is recovery?
This depends on the procedure and on you. Minimally invasive techniques generally mean a shorter hospital stay and quicker return to activity than open surgery. Follow the specific plan your team gives you rather than a general timeline.
What will I be able to eat?
Eating progresses in supervised stages — liquids, then soft textures, then regular foods. Long term, meals are smaller, protein matters more, and hydration needs attention.
Will I need vitamins for life?
After bariatric surgery, generally yes, with periodic blood tests to monitor levels.
Living with treatment
Will I need loose-skin surgery afterwards?
Some people consider it after significant weight loss, and some do not. It is a separate decision, usually considered only once weight has been stable.
What support is there after a procedure?
Follow-up appointments, blood tests, nutritional guidance and lifestyle support are part of treatment rather than optional extras.
What if surgery is not right for me?
Then it should not be recommended. Medical weight management is a legitimate treatment pathway in its own right.
Allurion Balloon
Is the Allurion Balloon surgery?
No. It is a swallowable gastric balloon, placed without surgery and without endoscopy or general anaesthesia, and it passes naturally after a set period. It is still a medical procedure and is only appropriate after assessment.
Who is the balloon usually considered for?
It is generally considered for people who want a non-surgical option, or whose weight and health profile do not make surgery the first choice. Whether it suits you depends on your medical history and goals, which is what the consultation establishes.
Will the weight stay off afterwards?
The balloon supports a period of change; it does not maintain the result by itself. What happens after it passes depends on nutrition, activity and follow-up. Weight regain is possible, as it is after any weight-loss treatment.
Medical weight management
Is medical weight management just a diet plan?
No. It is clinically supervised treatment that may combine assessment of metabolic health, structured nutrition, activity, behavioural support and, where appropriate, prescribed medication. It is reviewed and adjusted over time.
Can medication alone treat obesity?
Medication can be an effective part of treatment for some people, but it is prescribed after assessment, monitored, and used alongside nutrition and activity rather than instead of them. It is not suitable for everyone.
Do I have to try medical management before surgery?
Not as a rule. The pathways are not a ladder — the right starting point depends on your weight history, obesity-related conditions and what you have already tried. That is a clinical decision, made together.
See also: all treatments, patient results and consultation locations.