Tim Spector is a Professor of Genetic Epidemiology at King’s College London and Honorary Consultant Physician at Guy’s and St Thomas’ NHS Foundation Trust. Tim founded TwinsUK in 1992, which is now one of the richest collections of clinical data in the world. He is also an expert in personalised medicine and the gut microbiome. Tim is the lead researcher behind the world’s biggest citizen science health project – the Covid Symptom Study app, for which he was awarded an OBE.

Through his work he has been given many awards and prizes and is a Fellow of the Royal Society of Biology and the Academy of Medical Sciences. He has published over 900 scientific papers and is ranked by Google as being in the top 100 most cited scientists in the world. He has published four popular books, including the best-selling Diet Myth, Spoon-Fed, and more recently Food for Life – a Sunday Times bestseller. He makes regular appearances in the media.