Having a gastric sleeve surgery in Turkey is a common and actually good option for those with a high BMI.
After all, Turkey is a global hotspot for weight loss surgery as Turkish doctors blend top-tier medical expertise with costs that won’t bankrupt you.
But let’s be real for a second! Undergoing surgery has requirements that should be met and thought about.
How do you know if you qualify? What’s recovery like? And how do you even start planning if you have a higher or lower BMI than the required one?
BMI for Gastric Sleeve Turkey
First things first: your weight alone won’t determine if you qualify for gastric sleeve surgery.
Instead, clinics use Body Mass Index (BMI), a calculation based on your height and weight. This metric helps surgeons assess obesity-related risks and predict surgical outcomes.
The National Institutes of Health (NIH) established the foundational BMI criteria in 1991: candidates must have a BMI ≥ 40 kg/m², or a BMI 35–40 kg/m² with serious comorbidities like type 2 diabetes, hypertension, or sleep apnea.
Although these guidelines are over 30 years old, they are still widely used worldwide, including in Turkey.
More recent evidence from organizations like ASMBS and IFSO supports considering surgery for patients with a BMI of 30–35 kg/m² if significant metabolic issues (e.g., poorly controlled type 2 diabetes) are present.
Turkish clinics, coordinated by groups such as Allesta Health Group, often follow these international protocols but also look at individual metabolic profiles, not just BMI numbers.
Comprehensive pre-op assessments—including psychological evaluation, dietary counseling, and cardio-pulmonary fitness tests—are crucial. A multidisciplinary approach ensures you’re suitable, motivated, and fully informed.

Gastric Sleeve Turkey Package
Turkish clinics typically offer all-inclusive packages that cover:
- Pre-op diagnostics: blood panels, ECG, endoscopy, imaging, psychological assessment, and NPO/pre-op diet
- Surgery: performed laparoscopically (usually 40–70 minutes, removing ~75–85% of stomach) in JCI- or ISO-certified hospitals.
- Hospital stays: 2–3 nights in private wards with 24/7 monitoring
- Support services: airport transfers, VIP accommodation (often 4-5 star), translators, and companions.
- Aftercare: dietary plans, supplement guidance (B12, iron, vitamin D), follow-up calls, and virtual check-ins
This mirrors what Allesta Health Group promotes: a seamless, patient-centered, and fully supported treatment cycle.
Gastric Sleeve Turkey Payment Plan
While packages like Turkey Bariatrics’ €2,490 require full payment upfront, many clinics offer installments. Payment options in Turkey usually include:
- Deposit to reserve your slot (via Swift, Wise, etc.).
- Balance due before surgery upon hospital admission.
- Financing options via local banks or partnering companies.
- Insurance coverage is applicable mainly for Turkish residents or international policies.
Pricing generally ranges from £2,500–4,500 GBP for a sleeve, and slightly higher (up to £5,000) for a gastric bypass.
Ensure the package explicitly includes translators, hotel, tests, surgeon fees, and at least a year of aftercare, so there are no hidden extras later.
Procedure of Gastric Sleeve
Under general anesthesia, surgeons make 4–5 small incisions and use laparoscopic tools to remove ~75–85% of the stomach along the greater curvature.
The result is a narrow gastric “sleeve,” resembling a banana, that restricts food intake and significantly reduces ghrelin, the hunger.
Surgery Duration & Safety
- Typically, 40–70 minutes; less risk than open surgery due to minimally invasive nature.
- Mortality is very low (~0.08%, or <1 in 1,000), comparable to gallbladder removal.
Recovery steps
- 0–2 days: liquid diet post-op, early mobilization to reduce DVT risk; LMWH + compression stockings for thrombosis prevention.
- Week 1–2: pureed/soft foods (protein-focused); limited activity.
- Weeks 3–6: transition to solids; vitamin supplements essential.
- Most patients return to work in 2 weeks; full recovery by 6 weeks .
Risks & Benefits
- Common complications: leaks (~0.5%), strictures (~3.5%), bleeding, GERD, nutritional deficiencies.
- Long-term, patients may lose 50–70% of excess weight within 1–2 years.
- Significant improvements in diabetes, hypertension, fatty liver, sleep apnea, cardiovascular risk, and overall mortality.

Gastric Sleeve Turkey Istanbul
Istanbul is home to many hospitals and JCI- and ISO-certified facilities that come with laparoscopic suites and bilingual support teams.
Also, many surgeons are internationally trained and accredited by IFSO, ASMBS, and EAES.
Providers like Allesta Health Group streamline the process as they coordinate pre-op testing, surgery, lodging, and follow-up in Istanbul’s top hospitals.
Reviews of clinics in Istanbul reflect luxury care, excellent post-op monitoring, and high satisfaction.
Online users confirm Istanbul clinics have clean facilities, attentive care, and effective support systems.
Still, some caution against unverified agencies or excessively low prices, and stress the importance of verifying surgeon credentials.
Final Thoughts
Turkey—and especially Istanbul—offers high-quality, cost-effective gastric sleeve surgery in accredited clinics with expert surgical teams.
Allesta Health Group embodies this by offering inclusive packages, comprehensive care, and global standards.
Your BMI eligibility aligns with international norms, and you may still qualify if your BMI is 30–35 with major metabolic conditions. Remember, success relies on:
- Following proper pre-op protocols
- Having certified surgeons and JCI/ISO hospitals
- Ensuring robust aftercare and follow-up
If you’re thorough in your research, pick the right provider, and find a supportive balance of quality and cost, Turkey—with Allesta Health Group—could be the choice for your journey to better health.
FAQs
What BMI is required for a gastric sleeve in Turkey?
Usually BMI ≥40, or BMI 35–40 with comorbidities. Individuals with a BMI 30–35 and serious metabolic issues (e.g., uncontrolled diabetes) may still be eligible.
Why is psychological assessment necessary?
Bariatric protocols require comprehensive psychological readiness, showing motivation and realistic expectations. This multidisciplinary pre-op prep improves long-term results.
How quickly can I recover and return to daily life?
Hospital stay is 2–3 nights. You’ll be on liquids initially, soft foods after 1–2 weeks, and solids around week 3, with most people returning to work by 2 weeks and fully healed by 6 weeks .
How low is the risk of serious complications?
Mortality is around 0.08% (under 1 in 1,000). Still, leaks, bleeding, GERD, and nutrient deficiencies are possible; proper care and follow-up drastically reduce complications.
Do Turkish centers provide post-op follow-up?
Yes. Reputable centers—including Allesta Health Group—offer long-term support, dietary counseling, supplement guidance, and virtual check-ins, which boosts success rates to ~98%.
Is Turkey a safe choice for this procedure?
Many Turkish hospitals meet JCI and ISO standards. However, to minimize risk, ensure your provider is accredited, your surgeon is qualified, and you avoid low-cost offers from unverified agencies.