Dr Liam Mahedy

BA (NUIM), PhD (Ulster)

  • BS8 2BN

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Personal profile

Research interests

I am a Senior Research Associate in Genetic Epidemiology at the MRC Integrative Epidemiology Unit at the University of Bristol. My main area of research is in applying observational and genetic epidemiological methods to the understanding of dementia and cognitive decline. The core strength of my research is implementing a triangulation approach which strengthens the ability to make causal associations. I am currently working with Dr Lavinia Paternoster on a project examining risk factors for cognitive decline. 


After completing my PhD in 2012, I have held positions in the University of Bristol (Bristol Medical School and School of Psychology) and Cardiff University. Throughout these positions, I worked on studies that examined 1) risk factors for adolescent depression, 2) psychosocial resilience in offspring of mothers with depression, and 3) causes and consequences of adolescent alcohol use. From 2019 to 2020, I held an Elizabeth Blackwell Institute Early Career Fellowship where I examined alcohol use as a risk factor for cognitive decline and dementia. I welcome contact from potential collaborators. 

Structured keywords and research groupings

  • Life course epidemiology
  • Alcohol use
  • Cognitive decline
  • Dementia
  • Causal inference
  • Longitudinal modelling


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