Laparoscopic Sleeve Gastrectomy (Gastric Sleeve) in Bangkok, Thailand
Laparoscopic sleeve gastrectomy, often called a gastric sleeve, is keyhole surgery that removes a large part of the stomach and leaves a narrow tube, so you feel full sooner and eat less. At YOUNIFY Clinic, a Healthy Aging & Wellness Center based in Bangkok, Thailand, a gastric sleeve starts from THB 350,000. Surgery is performed by the clinic's bariatric surgical team at a JCI- or AACI-accredited partner private hospital, and your price is confirmed in a written quotation before any deposit.
Last updated:
At a glance
- Procedure
- Laparoscopic sleeve gastrectomy (gastric sleeve)
- Starting from (THB)
- Sleeve gastrectomy from 350,000
- Hospital stay
- Confirmed at consultation
- Time in Bangkok
- Confirmed at consultation
- Who performs
- Confirmed at consultation
- Where
- JCI- or AACI-accredited partner private hospital, Bangkok
- Last reviewed
- October 4, 2026
Key takeaways
- A sleeve gastrectomy removes a large part of the stomach by keyhole surgery; the removed stomach cannot be put back.
- In the SM-BOSS and SLEEVEPASS randomised trials, sleeve gastrectomy led to substantial weight loss at 5 and 10 years, somewhat less on average than gastric bypass.
- Reflux can start or worsen after a sleeve, so people with significant reflux or Barrett's oesophagus are often advised to consider a gastric bypass instead.
- A gastric sleeve at YOUNIFY Clinic starts from THB 350,000, confirmed in a written quotation before any deposit.
Price
| Procedure | Starting from (THB) |
|---|---|
| Gastric Sleeve (Laparoscopic Sleeve Gastrectomy, LSG) | 350,000 |
How a gastric sleeve works
The smaller stomach holds much less food, so you feel full after small portions. The removed part also makes much of ghrelin, a hormone that drives hunger, so appetite is often lower after surgery.
Food still follows its usual route into the small bowel. Nothing is re-routed, which is the main difference from a gastric bypass. A sleeve is not reversible, but it can later be converted to another operation if needed.
Who a gastric sleeve may suit
The 2022 guideline from the American Society for Metabolic and Bariatric Surgery (ASMBS) and the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) sets out who should be offered metabolic and bariatric surgery:
- Surgery is recommended for adults with a BMI of 35 or more, whether or not they have related health conditions.
- Surgery should be considered for adults with a BMI of 30 to 34.9 who have metabolic disease, such as type 2 diabetes.
Your surgeon looks at your health, previous operations, medicines and goals before recommending any procedure. If you would prefer not to have surgery, endoscopic sleeve gastroplasty (ESG) works through the mouth and leads to less weight loss. The bariatric surgery overview compares all the options.
When a sleeve may not be the right choice
- Health conditions that are not yet controlled, or not being able to commit to lifelong supplements and follow-up.
What results look like
Two randomised trials compared sleeve gastrectomy with gastric bypass over the long term.
- SM-BOSS (Peterli and colleagues, JAMA, 2018; 217 patients). At 5 years, excess BMI loss averaged 61.1% after sleeve gastrectomy and 68.3% after gastric bypass. The difference was not statistically significant.
- SLEEVEPASS (Salminen and colleagues, JAMA Surgery, 2022; 240 patients). At 10 years, median excess weight loss was 43.5% after sleeve gastrectomy and 50.7% after gastric bypass.
Related health conditions often improve too. In SM-BOSS, type 2 diabetes went into remission at 5 years in 61.5% of patients after a sleeve and 67.9% after a bypass, with no significant difference. In the STAMPEDE trial (Schauer and colleagues, New England Journal of Medicine, 2017), which enrolled people with type 2 diabetes, 23% reached an HbA1c of 6.0% or less at 5 years after sleeve gastrectomy, compared with 5% on intensive medical therapy alone.
Excess weight loss measures how much of the weight above a healthy reference weight was lost; it is not the share of total body weight. Weight loss is usually greatest in the first years, and some weight often returns later. These are averages from published studies. Results vary by individual.
Risks and side effects
Your surgeon explains how each risk applies to you before you decide.
- Staple-line leak. Uncommon but serious. It may need drainage, endoscopic treatment or further surgery.
- Bleeding from the staple line, during or after surgery.
- Narrowing or twisting of the sleeve, causing difficulty swallowing or vomiting.
- Nutritional deficiency. You eat less and absorb some nutrients less well, so lifelong vitamin and mineral supplements and regular blood tests are recommended.
- Further surgery. In SLEEVEPASS, 15.7% of patients had a reoperation within 10 years after a sleeve.
- General risks of surgery and anaesthesia, including blood clots and chest infection, and gallstones during rapid weight loss.
If weight returns after a sleeve, there are options. Surgical revision is explained on revision after sleeve gastrectomy, and treatment through the mouth on Redo ESG and endoscopic revision.
Your stay in Bangkok, step by step
- Send your details on WhatsApp. Your height, weight, health conditions, current medicines and any previous surgery. Medical records and recent blood tests help most.
- Written quotation. Your plan and price are confirmed in writing before any deposit.
- Follow-up at home. Nutrition support and remote reviews continue after you return.
Sources
- Peterli R, et al. Effect of laparoscopic sleeve gastrectomy vs laparoscopic Roux-en-Y gastric bypass on weight loss in patients with morbid obesity: the SM-BOSS randomized clinical trial. JAMA. 2018;319(3):255-265.
- Salminen P, et al. Effect of laparoscopic sleeve gastrectomy vs Roux-en-Y gastric bypass on weight loss, comorbidities, and reflux at 10 years in adult patients with obesity: the SLEEVEPASS randomized clinical trial. JAMA Surgery. 2022;157(8):656-666.
- Eisenberg D, et al. 2022 American Society for Metabolic and Bariatric Surgery (ASMBS) and International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO): indications for metabolic and bariatric surgery. Surgery for Obesity and Related Diseases. 2022;18(12):1345-1356.00641-4/fulltext)
- Yeung KTD, et al. Does sleeve gastrectomy expose the distal esophagus to severe reflux? A systematic review and meta-analysis. Annals of Surgery. 2020;271(2):257-265.
- Schauer PR, et al. Bariatric surgery versus intensive medical therapy for diabetes: 5-year outcomes. New England Journal of Medicine. 2017;376(7):641-651.
Frequently asked questions
How much does a sleeve gastrectomy cost in Thailand?
At YOUNIFY Clinic a gastric sleeve starts from THB 350,000. Your final price is confirmed in a written quotation before any deposit.
Can international patients have a sleeve gastrectomy at YOUNIFY?
Yes. Send your height, weight, health conditions and any previous surgery on WhatsApp. A member of the clinic's bariatric surgical team reviews them with you by video before any travel is planned.
Is a gastric sleeve the same as ESG?
No. A sleeve is surgery that removes part of the stomach. ESG folds and narrows the stomach from the inside through the mouth, removes nothing, and leads to less weight loss.
What if my weight comes back after a sleeve?
Options include GLP-1 medication, endoscopic revision through the mouth, or further surgery. Read weight regain after sleeve gastrectomy for background, and ESG or GLP-1 medication first for how medication fits alongside procedures.
YOUNIFY Clinic · 2nd Floor, Room 214, United Center Building, 323 Silom Road, Silom, Bang Rak, Bangkok 10500, Thailand · Near BTS Sala Daeng (5-min walk) · Open daily 11:00–20:00
WhatsApp +66 81 556 9696 · LINE @younifyclinic · Instagram @younifyclinicthailand · info [at] younifyclinic.com
Medically reviewed by Dr. Noppachai Siranart · Last reviewed
Individual results may vary. Please consult a doctor before treatment.