| 2017 | Member Evaluation Committee ZonMw |
| 2016 | Organizing committee of Kick off meeting Dutch Society for Research on Ageing, Leiden, NL |
| 2016 | Organizing Committee of BBMRI.Nl metabolomics workshop |
| 2016 | Organizing committee of Lorentz workshop: Translational Aging Research: Challenges and Opportunities, Leiden, NL |
| 2015 | Chair of the Dutch Society for Research on Ageing (DuSRA) |
| 2015-present | Organizing Committee of Welcome Trust meetings on Ageing and Metabolism in Cambridge, UK. Chair Prof. L. Partridge |
| 2015-present | Organizing Committee of Welcome Trust meetings on Ageing and Longitudinal studies in Cambridge, UK. Chair Prof. D. Kuh |
| 2013-2018 | Member MRC Lifelong Health and Ageing Steering Committee (London, UK) |
| 2012-present | Initiator and Board member of LUMC Sequencing Analysis Support Core (SASC) |
| 2011-2016 | Coordinator of Large scale FP7-Health EU projects IDEAL (Integrated research on Developmental determinants of Aging and Longevity). Organizing committee of annual meetings and Dissemination Conference |
| 2011-present | Chair of LUMC Medical Research Profile on Ageing |
| 2010-2014 | Co-director of Netherlands Consortium for Healthy Ageing (NCHA). Organizing Committee of National and International NCHA conferences. PI of the Leiden Longevity Study cohort |
| 2009-present | Board member of BBMRI-NL (Biobanking and Biomolecular Resources Research Infrastructure). Program leader of the BBMRI Metabolomics consortium |
| 2008 | Organizing Committee of 6th European Congress of Biogerontology, Noordwijkerhout, The Netherlands |
| 2007-2010 | Member ZonMW VIDI committee (2 x 2 years) |
| 2007-2010 | Member of the Scientific Committee (WAC) of the Dutch Heart Foundation |
| 2006-present | Section Editor in Editorial Board of Aging Cell |
| 2003-2005 | Member of Research Committee ‘Decennium van het Bewegingsapparaat’ (part of the international campaign “The Bone and Joint Decade”) |
| 2000 | As Professor of Molecular Epidemiology started a new group in Molecular Epidemiology |
| 1995 | Initiated a new genetic epidemiology group on age-related diseases at TNO |
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