Prof Dr Walid El Ansari is Professor of Public Health Medicine and Clinical Population Sciences at College of Medicine, Ajman University, United Arab Emirates. Prior to that, he was for 10 years, a senior consultant in the Dept. of Surgery, and the Clinical Research Lead across all surgical specialties at Hamad Medical Corporation hospitals, Qatar. He was also a full Professor at the College of Medicine, Qatar University; Weill Cornell Medicine in Qatar and New York; Skovde University in Sweden; University of East London and Newham University Hospital, London, and a visiting professor at the University of Southern Denmark. Dr El Ansari has held posts in Egypt, South Africa, UK, USA, Austria, Qatar, UAE, Denmark and Sweden. He sits on the editorial board of many international prestigious PubMed-cited journals, has been associate editor and guest editor for several, and is a valued reviewer for a multitude of international journals. Walid has undertaken commissioned work for the WHO headquarters in Geneva, Switzerland, The European Parliament and The European Court of Auditors in Luxembourg, and the World Bank and University of Cambridge, UK. He was invited speaker at the Institute of Medicine – USA, a visiting scholar at UCLA, and invited member to The European Centre for Disease Prevention and Control (ECDC), and to WHO’s Network of Innovators Geneva. Prof El Ansari secured several million dollars from prestigious research funding bodies and is widely published, with over 350 publications. Walid is in Stanford University’s list of the top 2% of scientists worldwide. He is widely published on obesity and Metabolic and Bariatric Surgery, and his work was selected as one of the best 5 papers in Metabolic and Bariatric surgery from the Middle East and North Africa.