John Deanfield is Professor of Cardiology at University College London. He trained at Cambridge University and subsequently at Great Ormond Street Hospital (paediatric cardiology) and the Royal Post-graduate Medical School (adult cardiology).

His career has focused on the lifetime management of cardiovascular disease (CVD) and he has contributed to major advances in vascular biology, prevention strategies and new treatment approaches.  He established non-invasive techniques to assess endothelial function in children, and these have been widely adopted informing population studies and interventional trials.

He has played a key role in shaping national and international prevention strategies, chairing the Joint British Societies (JBS3) guidelines, developing the widely used “Heart Age” tool.

His recent publications have described the cardiometabolic benefits of GLP-1 receptor agonists.

In 2023, he was appointed the UK’s first Government Champion for Personalised Prevention, and developed a national digital longitudinal platform with enhanced access, AI based risk and benefit prediction, and novel care delivery. 

Deanfield directs NICOR, which uses national longitudinal cardiovascular records  for quality improvement, research and public engagement.

Deanfield was awarded a BHF Chair to study CVD prevention and has also received an Einstein Professorship in Berlin to study artificial intelligence and large scale CV data. Deanfield was elected a Fellow of the Academy of Medical Sciences in 2001 and in 2017 was awarded the British Cardiac Society McKinsey Medal for outstanding service to British cardiology. He was awarded Commander of the British Empire (CBE) in 2021 for services to prevention and heart disease.   Deanfield is a Trustee Director of the Our Future Health programme, having acted as their Chief Medical Advisor, to develop the largest longitudinal patient cohort in the world for life sciences research (aiming for 5 million subjects). He has published 569 papers in major medical journals with a H-index of 157 and >194K citations.