About the Author Dr Michael Mosley is the 1 New York Times bestselling author of The FastDiet, FastExercise, FastLife, The 8-Week Blood Sugar Diet, The Clever Gut Diet, The Fast800 Diet, and Covid-19 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