Geoff Watts spent five years in medical research, working on cancer and on the effects of lasers on the eye. But he abandoned an academic career in favour of science and medical journalism. He began in print, and between 1972 and 1980 worked for World Medicine magazine – first as science editor and then as deputy editor. It was during this time that he began broadcasting. He has presented countless features and series for BBC Radios 3 and 4 – notably 'Science Now' and 'Medicine Now', the latter programme throughout its existence – and for the World Service. He is now the presenter of Radio 4's science magazine programme 'Leading Edge.' He has written books on irritable bowel syndrome and the placebo effect, and contributed chapters to two more on the future of medicine. He divides his time between writing, broadcasting, and media consultancy work. He is also a member of the UK Government’s Human Genetics Commission, and a Fellow of the Academy of Medical Sciences.