*THE SUNDAY TIMES BESTSELLER* The groundbreaking new book from Tim Spector, bestselling author of The Diet Myth and creator of the COVID Symptom Study app. 'Illuminating and so incredibly timely.' --Yotam Ottolenghi 'One of the clearest and most accessible short nutrition books I have read: refreshingly open-minded, deeply informative and free of faddish diet rules.' --Bee Wilson, Guardian ...