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Prof. Dr. Fatih Taskesen image

Department of obesity with weight loss surgery centre

Prof. Dr. Fatih Taskesen
general surgery, bariatric surgery

About the department

The department of obesity with weight loss surgery centre at Memorial Sisli Hospital Istanbul treats patients with morbid obesity. Weight loss surgery is indicated for patients with a body mass index above 35. Surgical treatment is used only if diet therapy, exercise and drug treatment fails. Therefore the interdisciplinary team of the department consists of surgeons, endocrinologists, nutritionists, behavioural therapists, psychologists and physiotherapists. All surgical interventions are performed in high-tech operating rooms with advanced monitoring systems that contribute to minimal traumatization of healthy tissues during the operation.

Obesity is not only an appearance problem but also causes serious health problems - excess weight can provoke the development of diabetes, arterial hypertension, diseases of the cardiovascular system and other pathologies. Bariatric surgery allows patients to lose weight quickly, improve their health, and prevent developing life-threatening pathologies. The department's surgeons specialize in gastric bypass and sleeve gastrectomy. These surgical techniques are recognized worldwide and are the most effective in the fight against morbid obesity.

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Treatment and diagnostic focus of the department


  • Obesity
  • Food addiction
  • High LDL cholesterol, low HDL cholesterol, or high levels of triglycerides (dyslipidemia)
  • Leptin resistance
  • Insulin resistance 
  • Hormone disorders 
  • Cushing's syndrome
  • Lack of physical activity
  • Genetic predisposition 
  • Type 2 diabetes
  • Gallbladder disease


  • Anamnesis (including family history) 
  • Physical examination (body mass index) 
  • Laboratory tests (blood and urine) 
  • Hormone panel (glomerular filtration rate and albumin to creatine ratio)
  • Lipid profile (cholesterol and triglycerides)
  • Electrocardiography (ECG) 
  • Kidney function tests 
  • Ultrasound examination 
  • Endoscopic procedures (gastroscopy, colonoscopy) 
  • Computed tomography (CT scan) 
  • Magnetic resonance therapy (MRI) 


  • Drug therapy 
  • Hormone therapy 
  • Minimally invasive procedures 
  • Restrictive operations
  • Laparoscopic or robotic gastrectomy (tubular stomach)
  • Endoscopic gastric balloon
  • Laparoscopic or robotic duodenal switch
  • Roux-en-Y gastric bypass
  • Mini gastric bypass
  • Botox stomach
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Doctor profile


  • 2002 - 2008 General Surgery Specialist Training, Ankara Numune Education and Research Hospital, Ankara, Turkey
  • 1993 - 2000 Medical Training, Firat University Medical Faculty, Elazığ, Turkey


  • 2018 General Surgery Specialist, Memorial Atasehir Hospital, İstanbul, Turkey
  • 2015 - 2018 General Surgery Specialist,  Dicle University Medical Faculty, Diyarbakır, Turkey
  • 2012 - 2013, General Surgery Specialist, Istanbul Sisli Florence, Nightingale Hospital, İstanbul, Turkey
  • 2011 - 2015 General Surgery Specialist,  Dicle University Medical Faculty, Diyarbakır, Turkey
  • 2008 - 2008 General Surgery Specialist, Diyarbakır Training and Research Hospital, Diyarbakır, Turkey
  • 2008 - 2011 General Surgery Specialist, Batman Public Hospital, Batman, Turkey
  • 2002 - 2008 General Surgery Specialist Training, Ankara Numune Education and Research Hospital, Ankara, Turkey
  • 2001 - 2002 Practioner Physician, Bingol Duzagaz Community Clinic, Bingol, Turkey
  • 2000 - 2001 Practioner Physician, Kagizman Public Hospital, Kars, Turkey

Awards, memberships, publications

  • Turkish Surgery Foundation
  • National Trauma and Emergency Surgery Association
  • Turkish Colon and Rectum Surgery Association
  • Liver Transplantation Association
  • Southeast Anatolia Breast Diseases Association
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