Aiden is an Associate Professor and Wellcome Trust Senior Research Fellow at the University of Oxford. His research group develops reproducible methods to analyse wearable sensor data in very large health studies to better understand the causes and consequences of disease. For example, they have developed methods to objectively measure physical activity in UK Biobank which are now actively used by researchers worldwide to demonstrate new associations with cardiovascular disease, depression, mood disorders, and others. These analysis methods has allowed his team to show that the lowest risk for cardiovascular disease in the UK Biobank cohort is seen at the highest level of accelerometer-measured physical activity, whether total, moderate-intensity, or vigorous-intensity. His team also discovered the first genetic evidence that physical activity might causally lower blood pressure.