Michelle Kelly-Irving is an INSERM (Institut National de la Santé et de la Recherche Médical) researcher in the field of life course epidemiology. She has previously worked at the University of Bristol and obtained her PhD in epidemiology from the University of London (Centre for Longitudinal Studies, Institute of education). She studied anthropology at the University of Durham as an undergraduate. The focus of her research is on the mechanisms and processes involved in the production of health inequalities across the life course. Notably she has been developing a program of research on health outcomes and health trajectories that are driven by social and psychosocial mechanisms from early life onwards. She is interested in how social and psychosocial processes are measured and can be used in relation to biomarkers and measures of physiological systems using longitudinal data.