Fact-Checking:

Tim Spector, MD, is a British physician, epidemiologist and author, and Professor of Genetic Epidemiology at King’s College London. He founded TwinsUK, the UK’s largest adult twin registry, and is scientific co-founder of the nutrition science company ZOE.

Spector has published extensively in genetic epidemiology, personalised medicine and the gut microbiome, and is the author of several popular books on nutrition and health.

Through books, television, podcasts and social media, Spector has become a prominent public voice on nutrition, making claims and recommendations about topics including the gut microbiome, personalised nutrition, ultra-processed foods, meal timing and intermittent fasting.