Dr Meg Arroll (PhD, FHEA, CPsychol, CSci, AFBPsS) is a psychologist and health researcher who specialises in stress and anxiety, invisible/misunderstood illness and integrative approaches to healthcare. She is a Chartered Psychologist with the British Psychological Society, an Associate Fellow of the British Psychological Society, a Chartered Scientist with the Science Council, a Fellow of the Higher Education Academy and a member of the Royal Society of Medicine. Louise Atkinson is a freelance journalist/writer/editor with a strong specialism in diet, nutrition, exercise and health. She has spent the last thirty years writing for national newspapers and glossy magazines. She has planned, co-ordinated and written the Daily Mail's massive circulation-boosting diet series which often results in the books racing into the bestseller lists.