"The most popular diet this century." -- Daily Telegraph "The diet that has made even the sceptics sit up and listen." -- Sainsbury's Magazine "The biggest diet revolution since the Atkins" --Daily Mail "The only diet you'll ever need" --Mail on Sunday "The diet that works" --Radio Times "The year's most talked about weight-loss trend" --Daily Express "Intermittent fasting is ideal for those of us who can just about manage to be good, but lack the long-distance rigour of saints" --Allison Pearson "The scientific evidence that Intermittent Fasting can have numerous health benefits is strong" --Professor Mark Mattson, National Institute on Aging "A modern phenomenon...it sometimes seems as if every other person you meet is following the Fast Diet" --The Guardian

Dr Michael Mosley is a British journalist, scientist, producer and TV presenter. Mimi Spencer is a feature-writer and columnist for publications including the Mail and the Evening Standard.