Dr Richard Mackenzie Author

Dr Richard Mackenzie is one of the UK's foremost experts on glucose metabolism, insulin resistance and their interactions with stress hormones. Dr Mackenzie is a leading researcher at Research Centre for Health & Life Sciences (Coventry University) and the Institute of Cardio-Metabolic Medicine (University Hospital Coventry and Warwick NHS Trust) and is internationally recognized for his work. He leads on metabolic health at a distinguished Harley Street clinic and has published more than 40 journal articles, mainly on insulin resistance and diabetes.

Peter Walker is deputy political editor of the Guardian and a well-known commentator and frequent broadcaster on active living and health, as well as on politics.