Obesity affects 650 million adults worldwide (WHO, 2022). Surgical treatment is indicated at BMI ≥35 with comorbidities or BMI ≥40 without. Bariatric surgery achieves 60–80% excess weight loss and 50–80% remission of Type 2 diabetes. Treatment costs $4,000–$9,000 abroad versus $15,000–$35,000 in the US.
Medically reviewed by Dr. Murat Ustun, M.D., Founder & Medical Director, Flytocure Healthcare.
Obesity is a chronic medical condition defined by excess body fat accumulation. It is classified by Body Mass Index (BMI = weight kg / height m²). Obesity is associated with Type 2 diabetes, hypertension, sleep apnoea, cardiovascular disease, certain cancers, and reduced life expectancy. It is not a lifestyle choice — it is a metabolic condition with genetic, hormonal, and environmental components.
| Category | Criteria | Recommended Treatment |
|---|---|---|
| Overweight | BMI 25–29.9 | Lifestyle modification, pharmacotherapy (Ozempic, Wegovy) |
| Obese Class I | BMI 30–34.9 | Lifestyle + pharmacotherapy; ESG considered if comorbidities present |
| Obese Class II | BMI 35–39.9 | Bariatric surgery (gastric sleeve, mini-bypass) if ≥1 comorbidity |
| Obese Class III (Severe) | BMI ≥40 | Bariatric surgery (sleeve, bypass, SADI-S) — any comorbidity status |
| Super Obese | BMI ≥50 | Staged approach: sleeve first, bypass revision; intensive pre-op programme |
Standard international criteria: BMI ≥40 without comorbidities; BMI ≥35 with at least one obesity-related comorbidity (Type 2 diabetes, hypertension, sleep apnoea, fatty liver disease, GERD). Some clinics in Turkey and Mexico accept BMI ≥30 with well-documented failed diet attempts and comorbidities. Always confirm eligibility with the clinic before booking.
Yes — bariatric surgery is the most effective treatment for Type 2 diabetes remission. Gastric bypass achieves 70–80% Type 2 diabetes remission at 2 years. Gastric sleeve achieves 50–60% remission. Many patients discontinue insulin and oral medications within days to weeks of surgery — before significant weight loss occurs, suggesting metabolic mechanisms beyond weight reduction.
Most patients stay in-country for 7–10 days: surgery (day 1), 2–3 nights hospital, 4–6 nights hotel recovery with daily clinic check-ups. Flying is permitted after 7–10 days for sleeve and 10–14 days for bypass. Full recovery and return to normal diet takes 4–8 weeks. Lifelong nutritional supplementation is required.
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