Professor Dame Theresa Marteau is Director of the Behaviour and Health Research Unit at the University of Cambridge and co-chair of The Lancet Chatham House Commission on improving health post Covid-19. Her research focuses on the development and evaluation of interventions to change behaviour (principally diet, physical activity, tobacco and alcohol consumption) to improve population health and reduce health inequalities, with a particular focus on targeting non-conscious processes. She also researches the acceptability to publics and policymakers of government intervention to change behaviour.