Ahmed is a statistical epidemiologist and Senior Research Fellow at Bristol Medical School, University of Bristol. His research develops and applies statistical methods for describing physical and mental health trajectories across the life course, including the role of early life factors and the effects of trajectories on later health outcomes. He currently leads work on methods for analysing pubertal growth, supported by an MRC New Investigator Research Grant. Ahmed also leads a multinational cohort collaboration within the A.R.T-HEALTHPARTNERSHIP investigating the effects of assisted reproductive technology on offspring health. He previously worked on the LongITools project (environmental exposures and health trajectories) and the LifeCycle project, helping to establish the EU Child Cohort Network. Ahmed earned his PhD in epidemiology from University College London, following an MPH at the University of Essex and an undergraduate degree in medical sciences at University College Cork.