Assoc. Prof. Dr. Hasan Abuoğlu is an Associate Professor of General Surgery based in Istanbul, focusing on bariatric and metabolic surgery. With over 25 years of professional experience and more than 10,000 laparoscopic procedures, he applies established laparoscopic methods in the treatment of obesity.
10,000+
Laparoscopic Procedures
Since 2000
25+
Years Experience
Surgical Career
30+
Countries Worldwide
Global trust
Assoc. Prof. Dr. Hasan Abuoğlu
General Surgeon
After graduating from Selçuk University Faculty of Medicine, Dr. Abuoğlu completed his specialty training in general surgery at Göztepe Training and Research Hospital. In 2014, he received advanced surgical training at Cleveland Clinic in the United States, and obtained his associate professorship while working in the organ transplantation and general surgery team at Haydarpaşa Numune Training and Research Hospital. Since 2010, his clinical work has focused on bariatric and metabolic surgery.
He is a member of the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO), the Turkish Medical Association and the Turkish Surgical Society. His clinical practice is built on over 25 years of professional experience, more than 10,000 laparoscopic procedures and over 50 scientific publications. Treatment is planned within a multidisciplinary process involving specialists in endocrinology, nutrition and psychology.
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Enter your height and weight to see your BMI instantly. Discover the clinically accepted range for bariatric and metabolic surgery.
Laparoscopic methods used in the treatment of obesity and metabolic conditions. The appropriate treatment for each patient is determined individually based on BMI, coexisting conditions and personal factors.
The most frequently asked questions about bariatric surgery and their answers
Patients with a BMI of 40 or above, or a BMI of 35-39.9 combined with obesity-related conditions such as type 2 diabetes, hypertension or sleep apnea, are generally within the considered patient group. Adults aged 18-65 fall within the typical indication range. Final eligibility is determined through individual clinical assessment.
Sleeve gastrectomy is less invasive, preserves intestinal absorption and carries a lower long-term vitamin-deficiency risk. For advanced type 2 diabetes, severe reflux or BMI 50+, gastric bypass / mini bypass delivers a stronger metabolic effect — we decide together based on your health profile, blood values and lifestyle.
With an experienced team and a fully equipped hospital, the sleeve gastrectomy complication rate is below 1% — comparable to a gallbladder operation. Possible risks include bleeding, infection and rarely a leak at the staple line; thorough pre-operative testing, coagulation profile and pulmonary assessment minimize these risks.
Following sleeve gastrectomy, loss of 60-70% of excess weight within the first 12-18 months is reported in the literature; following gastric bypass, 70-80%. An average loss of 10-15 kg in the first month is within the typical range. Surgery is a tool; long-term maintenance of outcomes depends on adherence to nutrition and lifestyle recommendations. Annual follow-up, dietitian assessment and revision options where indicated are part of the standard follow-up protocol.
Patients typically stay 3-4 days in hospital. You can return to a desk job in 7-10 days and to physically demanding work in 3-4 weeks. Full recovery takes 4-6 weeks; heavy sports, swimming and long travel are allowed after week 6.
We offer all-inclusive packages including a free online consultation, VIP airport transfers, companion accommodation, interpreter services and 1 year of free online follow-up. The average stay in Turkey is 7 days, and the total cost is 60-75% lower than in Europe or the USA. Reach us via WhatsApp or email for detailed package and pricing information.
Expert insights on bariatric surgery, healthy living, and the surgical process
For detailed information about bariatric and metabolic surgery procedures, you may use the contact channels below. Initial consultations for international patients can be arranged remotely via video call or WhatsApp.
Assoc. Prof. Dr. Hasan Abuoğlu
Associate Professor of General Surgery
Category guide
Your BMI
Bariatric surgery is not indicated; lifestyle adjustment and clinical follow-up are recommended.
Real patient reviews verified through Trustpilot and Google.
I cannot fault this clinic. From start to finish it was a smooth experience. The doctor and team made me feel relaxed even though I was on my own. I would consider further consultations with them.
Lesley C.
Had my gastric sleeve two years ago. Great hospital and a thoughtful team that genuinely care about their patients.
Stephanie K.
The whole experience was well organised and the team was very supportive. The dietitians and doctors gave clear attention throughout. The clinic atmosphere was welcoming and professional.
Sneja B.
I had the chance to be among true professionals. I have words to describe their attention and dedication. Recommended for anyone considering bariatric surgery in Istanbul.
Ivone D.
I had my gastric sleeve at the clinic in Istanbul, having travelled from Germany. From the welcome to the hotel arrangements, hospital and clinic — every step was well organised.
Sohail
From arriving at the hospital to the procedure, every step was explained clearly. At one point I felt anxious, but the team helped me understand the process and put my mind at ease. A truly professional environment.
Ibe I.
Very caring, professional and efficient. The whole team — including translator Tuncay, who was there for us throughout — was attentive. Dr Hasan was caring and professional, and Elif and the dietitian team listened and explained everything clearly.
Emma
From the moment they greeted me at the door, the warm and sincere attitude began. Incredible professionalism and, most importantly, genuine care for patients.
Elena M.
All the staff were wonderful. Caring and a very clean, quiet environment. The doctors and nurses were attentive, and the coordinators were always happy to assist with any questions. I went to Istanbul alone and was looked after well.
Donna K.
A very big thank you to Dr. Hasan Abuoğlu and to interpreter Elife. The doctor and the whole team were professional and answered every question. The organisation, the transfers and the quick responses were all handled well.
Yllka
Doctor Hasan is professional and caring — I felt at ease. Translator Elife helped my communication greatly, and dietitian Elif was always ready to explain and answer my questions.
Idah O.
My experience at the clinic in Istanbul was very pleasant. Professional doctors, careful service and detailed guidance on after-care.
Katarzyna
I am happy with my experience. My translator was helpful at all times. A welcoming hospital — thank you for everything.
Aroma S.
We travelled from Madrid for a sleeve gastrectomy. The clinic team is professional. The doctor visited every day and the team paid careful attention to our questions.
Joselin G.
I travelled to Türkiye in March. I was unsure what to expect, but I was glad to have chosen this clinic. The whole team was professional — the translator Burak, the nurses, the medical team and the dietitian.
Manoli J.
I cannot fault this clinic. From start to finish it was a smooth experience. The doctor and team made me feel relaxed even though I was on my own. I would consider further consultations with them.
Lesley C.
Had my gastric sleeve two years ago. Great hospital and a thoughtful team that genuinely care about their patients.
Stephanie K.
The whole experience was well organised and the team was very supportive. The dietitians and doctors gave clear attention throughout. The clinic atmosphere was welcoming and professional.
Sneja B.
I had the chance to be among true professionals. I have words to describe their attention and dedication. Recommended for anyone considering bariatric surgery in Istanbul.
Ivone D.
I had my gastric sleeve at the clinic in Istanbul, having travelled from Germany. From the welcome to the hotel arrangements, hospital and clinic — every step was well organised.
Sohail
From arriving at the hospital to the procedure, every step was explained clearly. At one point I felt anxious, but the team helped me understand the process and put my mind at ease. A truly professional environment.
Ibe I.
Very caring, professional and efficient. The whole team — including translator Tuncay, who was there for us throughout — was attentive. Dr Hasan was caring and professional, and Elif and the dietitian team listened and explained everything clearly.
Emma
From the moment they greeted me at the door, the warm and sincere attitude began. Incredible professionalism and, most importantly, genuine care for patients.
Elena M.
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