Sara Hägg

Sara Hägg

Senior Lecturer | Docent
Telephone: +46852482236
Visiting address: ,
Postal address: C8 Medicinsk epidemiologi och biostatistik, C8 MEB II Hägg, 171 77 Stockholm

About me

  • Associate Professor (Docent) in molecular epidemiology at the Department of Medical Epidemiology and Biostatistics, Karolinska Institutet.


    • PhD in Computational Biology, Linköping University, 2009
    • MSc in Molecular Biology, Stockholm University, 2003
    • BSc in Computer Science, Stockholm University, 2003


    • Genetic epidemiology, Medical epidemiology and biostatistics (MEB), KI, 2011-2014
    • Molecular epidemiology, Department of medical sciences, Uppsala University, 2013-2014


    • Stanford University School of Medicine, 2016


  • My main research interest is human biological aging. How to measure it in human cohorts, understanding causal pathways in aging and identify geroprotectors to repurpose for age-related diseases. Markers of human biological aging can be telomere length, epigenetic clocks, functional aging, frailty index, etc. I study such markers in longitudinal data from several twin studies of aging (SATSA, GENDER, HARMONY, OCTO-Twin, TwinGene) within the Swedish Twin Registry and also using UK biobank data and many other Swedish cohorts. Methods that I use include longitudinal modelling, causal analyses using drug target Mendelian Randomization, and large-scale genome-wide approaches. For a more detailed description of my current research please visit my project page A geroscientifc approach to study human biological aging.


All other publications



  • Senior Lecturer, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 2023-

Degrees and Education

  • Docent, Karolinska Institutet, 2015

Leadership and responsibility assignments

  • Director of core facility, LifeGene, Karolinska Institute,, 2024-
  • Founding board member, The Nordic Aging Society (NAS), University of Copenhagen,, 2023-


  • Karolina Gustavsson, Muti-omics of aging and risk for dementia, 2024
  • Sara Licaj
  • Katalin Vincze
  • Bowen Tang

Committee work

  • Chair, Expert group, Swedish Twin Registry, Karolinska Institute,
  • Member, Steering committee, SIMPLER, Uppsala University,
  • Member, Executive group, Strategic research area in epidemiology and biostatistics, Karolinska Institute,

Editorial work

  • Clinical epigenetics, Associate editor,, 2023

Other expert reviewer/evaluation assignment

  • Evaluator of research applications in national competition, Swedish Research Council, 2024
  • Reviewer of candidates proposed for academic positions, University of Oulu, 2024
  • Evaluator of research applications in national competition, Public Health panel, Academy of Finland, 2023
  • Reviewer of candidates proposed for academic positions, Evaluator for fellowship, Medical Research Council, 2023
  • Evaluator of research applications in international competition, Different panels, National Institute on Aging, 2018

Conference/event participation

  • Chair, Gordon Research Conference (GRC) in Systems Aging,, 2024
  • Chair, SFOepi conference - the future of epidemiology and biostatistics,, 2024
  • Chair, The Nordic Aging Society - Symposium on Aging, 2024
  • Other, The Nordic Congress on Gerontology, Member of the National Scientific Committee,, 2024
  • Invited speaker, Aging Research and Drug Development (ARDD),, 2024
  • Invited speaker, Biomarkers of Aging Conference,, 2024
  • Invited speaker, Max Planck Freiburg Epigenetics meeting,, 2024

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