High: major surgery
One
At least 10 days
For life
Not medical advice. Whether this treatment is right for you is a decision to take with a doctor or dentist who has examined you. Talk to your own doctor before you book.
What it is
The main types are gastric bypass, gastric band, gastric balloon and sleeve gastrectomy. They make the stomach smaller, so it feels full sooner and less food is eaten.
It changes how you eat for the rest of your life: weeks of liquid and soft food, vitamin and mineral supplements, and regular check-ups.
| Type | What it means |
|---|---|
| Sleeve gastrectomy | A large part of the stomach is removed, leaving a narrow tube. It cannot be reversed. |
| Gastric bypass | The top of the stomach is joined to the small intestine, so food bypasses most of the stomach. |
| Gastric band | An adjustable band around the top of the stomach. It can slip out of place. |
| Gastric balloon | A balloon placed in the stomach through the mouth, removed after some months. Not surgery, but not risk-free. |
Before you book
- Talk to your doctor at home before you book: you will need them, or a specialist clinic, for years afterwards.
- In the UK, the surgeons' societies for weight-loss and aesthetic surgery jointly ask patients to consult a UK surgeon first.
- After a general anaesthetic, the NHS advises having someone stay with you for at least 24 hours: plan not to be alone for the first days, especially abroad.
Who it is for
- On the NHS, surgery is considered with a BMI of 40 or more, or between 35 and 40 with a condition that might improve with weight loss (for example high blood pressure, diabetes, arthritis, breathing problems).
- It may be considered with a lower BMI for people of South Asian, Chinese, other Asian, Middle Eastern, Black African or African-Caribbean background.
- You must agree to lasting lifestyle changes and regular check-ups. A clinic that operates without checking any of this is a warning sign.
Recovery and travel
Usually keyhole surgery under general anaesthetic.
You can usually leave hospital one to three days after surgery.
Avoid flying for 10 days after abdominal surgery.
First two weeks: water and fluids. Weeks 3 and 4: runny food such as yoghurt or purée.
After four to six weeks, start to return to your normal activities. Weeks 5 to 8: soft food.
From week 8: gradually return to a healthy, balanced diet.
Follow-up at a weight-loss surgery clinic for at least the first two years, then usually a yearly check-up with a GP for the rest of your life.
Flying home: The CDC advises not flying for 10 days after chest or abdominal surgery.
Trips: One trip, but a long one: at least 10 days before flying home, then two years of specialist follow-up you must arrange at home before you go.
Put these steps on your own dates
Risks
Blood clots
Possible after surgery, and long-distance travel soon after adds to the risk.
Stomach leak
A small chance of a leak where the stomach was cut or joined: an emergency.
Other complications
Wound infection, a blocked gut, gallstones, excess skin; a gastric band can slip out of place.
No follow-up
Poor or no access to routine follow-up can lead to weight regain and nutritional deficiencies.
Assessment and choice
Lack of proper assessment before surgery, the wrong procedure, or a different procedure from the one expected.
Red flags
- No questions about your BMI, health conditions or eating history before a date is offered.
- Surgery booked within days of first contact, or several procedures combined to lower the price.
- No named surgeon, or no plan for what happens if you have a complication after you fly home.
- Packages that send you home before 10 days.
Questions to ask the clinic
- Who is the surgeon, how many of these operations do they do a year, and where are they registered?
- Which operation exactly, and why that one for me?
- Is a dietitian and a psychological assessment part of the preparation?
- How many nights in hospital, and who sees me before I fly?
- What follow-up is included for two years, and what happens if I have a leak or another complication at home?
- Who looks after me in the first 24 hours after the anaesthetic, and what do I tell the anaesthetist? Tell them about every health condition (for example sleep apnoea) and every medicine.
Ask for the answers in writing. A clinic that will not name the person who treats you has answered the first question.
Where to check the clinic
Each country has its own registers of doctors, dentists and clinics. Pick the destination:
The checks that apply everywhere
- Talk to your doctor or dentist at home first. They know your history, can tell you whether you need the treatment at all, and you will rely on them afterwards.
- Consult the person who will treat you, not a salesperson. Video calls do not replace an examination, and a cooling-off period between consultation and surgery protects you.
- Check the doctor's or dentist's registration yourself. Qualifications should be verified independently, not taken from the clinic's website.
- Check the clinic's licence. Clinics need an authorisation from the health authority; in some countries a separate one for international patients.
- Look for accreditation, but do not rely on it alone. International accreditation bodies list accredited facilities abroad, but accreditation does not guarantee a good outcome.
- Get a written plan, quote and contract. A treatment plan and a price should follow an examination by a qualified professional, and a written contract tells you what you can claim.
- Know what the price includes. Follow-up care can carry substantial extra fees, and revisions after a complication add to the cost.
- Arrange your aftercare at home before you go. Follow-up care might not be easily available at home and may not be covered by your health system.
- Get insurance that covers the treatment. Standard travel insurance does not normally cover elective surgery abroad, and an air ambulance home is very expensive.
- Plan enough days before flying home. Surgery and air travel each raise the risk of blood clots.
- Bring your records home, in English. Doctors at home need to know exactly what was done, with which materials and medicines.
- Be careful with agents and holiday packages. Private companies have a financial interest in booking your treatment; the UK government advises caution with websites selling surgery as part of a holiday.
Once you are home
- Arrange your follow-up before you book: ask your doctor whether they will provide it after private or overseas surgery, as policies differ between areas and health systems.
- Take vitamin and mineral supplements as told, attend every check-up, and keep your operation notes in English.
What your health system covers after private treatment abroad depends on where you live:
🇬🇧 If you live in United Kingdom
The NHS does not pay for private treatment you choose abroad, and your EHIC or GHIC does not cover planned treatment. Standard travel insurance does not normally cover you if you travelled for elective surgery: you may need specialist cover.
The NHS is not liable for negligence or failure of treatment abroad, and the Foreign Office cannot usually help: planned treatment is treated as a commercial arrangement. Plan your aftercare and how records will be shared before you go.
🇮🇪 If you live in Ireland
The HSE Cross Border Directive scheme only refunds planned care in another EU or EEA country that is publicly funded in Ireland, with a referral, up to what it would cost in the Irish public system; travel and accommodation are not refunded. So cosmetic treatments and hair transplants, which are not publicly funded in Ireland, are outside it.
Ask your GP before you go how follow-up would work once you are home, and check whether your travel insurance covers planned treatment and its complications: many policies exclude it.
🇫🇷 If you live in France
Purely aesthetic procedures are not reimbursed by the Assurance Maladie, in France or abroad, and neither is the follow-up care of such an operation. Planned care abroad is only reimbursed when it is reimbursable in France, sometimes with prior authorisation.
If a complication occurs, the care it needs is medical and is covered normally. A result you are unhappy with is not a complication: corrective work is at your cost.
🇺🇸 If you live in United States
Check whether your health plan covers anything abroad: most do not cover planned treatment, and Original Medicare generally does not pay for care outside the United States, with limited exceptions. Consider supplemental cover, including medical evacuation.
Seek care promptly if a complication develops, during travel or after you return, and bring your overseas records in English. Legal recourse abroad may be more limited than in the United States.
🇦🇺 If you live in Australia
Medicare doesn't cover you when you're overseas, reciprocal health care agreements only cover some situations, and basic travel insurance rarely covers medical tourism: get a specialised policy for your procedure, its complications and medical evacuation, and tell your insurers everything.
You, your family or your insurer pay for further care or an evacuation. Consular staff can contact your family and give lists of English-speaking hospitals and lawyers, but cannot pay bills or recommend surgeons. Smartraveller advises taking someone with you.
🇳🇿 If you live in New Zealand
Make sure your travel insurance covers complications and medical evacuation, and talk to your health practitioner in New Zealand about the procedure and its risks before you go.
Get copies of your surgical details before you leave: problems can appear once you are home, and your practitioner in New Zealand will need them. Check with a health practitioner before flying after surgery.
🇸🇦 If you live in Saudi Arabia
The Ministry of Health sends patients abroad at its expense only by royal order or by a decision of the High Medical Committee approved by the minister. Planned treatment you choose yourself, such as cosmetic surgery, is private and at your own cost.
For patients the ministry refers abroad, the Saudi health attaché in the country of treatment arranges the appointment and follows the patient; private patients are on their own. Talk to your doctor in Saudi Arabia before you go and bring your records home.
Sources
- NHS: Weight loss surgery, why it's done nhs.uk · checked 25 Oct 2026
- NHS: Weight loss surgery, recovering nhs.uk · checked 25 Oct 2026
- NHS: Weight loss surgery, complications nhs.uk · checked 25 Oct 2026
- NHS: What is weight loss surgery nhs.uk · checked 25 Oct 2026
- BAAPS and BOMSS joint statement on surgical tourism (20 April 2023) baaps.org.uk · checked 25 Oct 2026
- CDC Yellow Book: Medical tourism cdc.gov · checked 25 Oct 2026
- NHS: General anaesthetic nhs.uk · checked 25 Oct 2026
Next review due 25 Apr 2027. Found something wrong or out of date? Tell us via the contact address.