Mimi Spencer is a feature writer, columnist, and the author of 101 Things to Do Before You Diet. Dr. Sarah Schenker is a Registered Dietitian and Nutritionist who has served on both professional and government committees. She now combines her sports nutrition work, consulting for football clubs in the UK, with regular appearances on television and writing for scientific journals, as well as for newspapers, magazines, and websites. Dr Michael Mosley is the #1 international bestselling author of several books, including The Fast 800 Keto, The Fast 800, The 8-Week Blood Sugar Diet, The Clever Guts Diet and The Fast Diet. Dr Mosley trained to be a doctor at the Royal Free Hospital in London before joining the BBC, where he spent three decades as a science journalist and executive producer. Now freelance, he is a well-known television personality and has won numerous television awards, including an RTS (Royal Television Award), and was named Medical Journalist of the Year by the British Medical Association.