Mr Dimitri Pournaras

Mr Dimitri Pournaras is a distinguished consultant upper GI and bariatric surgeon practising in Bristol, practising at Nuffield Health Bristol Hospital – The Chesterfield and Spire Bristol Hospital. He specialises in bariatric and laparoscopic upper gastrointestinal surgery, including gastric bypass, sleeve gastrectomy, and gallbladder surgery. Mr Pournaras is dedicated to supporting patients through complex weight loss procedures and managing obesity-related conditions with a personalised, patient-centred approach.

Mr Pournaras completed his medical degree at the Aristotle University of Thessaloniki and undertook postgraduate training across leading UK and international centres, including Cambridge, Norwich, Sweden, and Japan. He was awarded a PhD by Imperial College London for his research into the mechanisms behind bariatric surgery and its effects on obesity and diabetes. He is also the Clinical Lead for Bariatric Surgery at North Bristol NHS Trust. 

Committed to advancing obesity care through research and education, Mr Pournaras has authored over 100 peer-reviewed publications in leading journals such as The Lancet and The BMJ. He is on the editorial boards of Obesity Surgery and Clinical Obesity and delivers numerous invited international lectures annually. As Surgical Specialty Lead for the British Obesity and Metabolic Surgery Society and Royal College of Surgeons of England, he collaborates internationally to develop personalised treatment strategies and improve outcomes for patients living with obesity.