| Dates | 
Organization | 
Position | 
2022-Present
  | 
Academia Europaea, the pan-European Academy of Sciences
  | 
Member
  | 
| 2006 | 
Health Council committee on Biotechnology | 
Member | 
| 2005-2010 | 
Jury for the Heineken Prize for Medicine, KNAW | 
Member and Honorary Secretary | 
| 2004-Present | 
Netherlands Medical Journal Association (Vereniging Het Nederlands Tijdschrift voor Geneeskunde) | 
Member | 
| 2004-2005 | 
Royal Netherlands Academy of Sciences, Committee on Contract Research and Scientific Independence | 
Member | 
| 2003-Present | 
Royal Netherlands Academy of Sciences (Koninklijke Nederlandse Akademie van Wetenschappen) | 
Member | 
| 1991-1997 | 
Netherlands Heart Foundation Scientific Advisory Council | 
Member | 
| 1990-2009 | 
Government Health Council (Gezondheidsraad) | 
Member | 
| 1988-1991 | 
Food Law Advisory Committee (Warenwetcommissie) | 
Member | 
| 1987-1995 | 
Netherlands Postgraduate Programme in Human Nutrition | 
Secretary / Chairman | 
| 1987 | 
Dutch Cholesterol Consensus Preparatory Committee | 
Member | 
| 1982-1986 | 
ZWO-werkgemeenschap Voeding (Netherlands Science Foundation, Study Section on Nutrition) | 
Co-founder / Secretary / Chairman | 
| 1981-1985 | 
Netherlands Heart Foundation Scientific Advisory Council | 
Member |