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Commitee Members

George Smith

George Smith

Professor George Smith FMedSci FRS


Elected: 2019






George Davey Smith is a clinical epidemiologist who has focused on methods for improving causal inference in studies of disease aetiology and disease prevention. His work has involved early implementation of ‘negative controls’ in epidemiological studies, the use of cross-context comparisons, sensitivity analyses, unobtrusive data collection methods and randomized trials in thought-to-be difficult situations. He pioneered the use of germline genetic variants for investigating modifiable causes of disease (‘Mendelian randomization’), developed several extensions of the basic method, and contributed to its application in many settings. He is an advocate of the pre-specified application of a range of methods, with different structures of potential biases, to the same question (‘triangulation’), as the key approach to strengthening causal inference. Throughout his career he has promoted increasing the accessibility of data, and implemented this in studies he has led, including the Avon Longitudinal Study of Parents and their Children (ALSPAC).

Professional positions

Scientific Director , Avon Longitudinal Study of Parents and their Children (ALSPAC), University of Bristol
Professor of Clinical Epidemiology, Population Health Sciences, Bristol Medical School, University of Bristol
Director, MRC Integrative Epidemiology Unit, University of Bristol

Interest and expertise

Subject groups

  • Health and human sciences
    • Clinical epidemiology, Medical statistics and demography
  • Organismal biology, evolution and ecology
    • Population genetics
  • Other
    • History of science


Mendelian randomization, causal inference, genetic epidemiology, health inequalities

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