A Calorie is a Calorie

A rigorous account of the science of energy balance * The Telegraph *

Keith Frayn is Emeritus Professor of Human Metabolism at the University of Oxford. He has spent his career studying human metabolism and nutrition in different conditions, from injured patients arriving in accident and emergency, through studies of exercise and recreational hill-walking, to people with diabetes, obesity and lipid disorders. His current research is focused on the pathways by which we lay down and mobilise our fat stores. He has published more than 300 scientific articles as well as two books on human metabolism - an influential textbook and a concise primer for general readers. He is often consulted by the media and public for comments and advice on aspects of metabolism, particularly diet and body weight, and his work and views are often mentioned in Twitter threads and online discussion forums.