Giles Yeo MBE is a Principal Research Associate at MRC Metabolic Diseases Unit and a Scientific Director of the Genomics/Transcriptomics Core at the University of Cambridge.

He was born in London and lived in Singapore, San Francisco, United States, and since 1994 has been based in Cambridge, United Kingdom. In 1994 he graduated from University of California, Berkeley (Molecular and Cell Biology) and in 1997 he completed a PhD study at University of Cambridge (Molecular genetics). His focus is on the study of obesity, brain control of body weight and genetic influences on appetitive behaviour. He has presented three BBC Horizon documentaries: Why are we getting so fat (2016), Clean Eating: The Dirty Truth (2017) and Vitamin Pills: Miracle or Myth? (2018). Giles was also a presenter on BBC Two's Trust Me, I'm A Doctor. His first book, 'Gene Eating: The Story Of Human Appetite' was published in Dec 2018. His second book, 'Why Calories Don't Count' was published in June 2021.