Tim Spector is a professor of genetic epidemiology at King's College London and honorary consultant physician at Guy's and St Thomas' hospitals. He is a multi-award-winning expert in personalised medicine and the gut microbiome, and the author of five books, including the bestsellers Spoon-Fed and The Diet Myth. He appears regularly on TV, radio and podcasts around the world, and is one of the top 100 most cited scientists in the world. He is co-founder of the personalised nutrition company ZOE and leads the world's biggest citizen science health project, the ZOE Health study. He was awarded an OBE in 2020 for his work fighting Covid-19.