Bio Ivonne Rietjens Professor Ivonne M.C.M. Rietjens is professor in Toxicology and head of the division of Toxicology at Wageningen University (WU), The Netherlands since 2001. She obtained an MSc in Molecular Sciences (cum laude) in 1983 and her PhD in Toxicology in 1986 at Wageningen University. After her PhD she was a postdoc at the National Institute of Public Health and the Environment (RIVM, Bilthoven The Netherlands) and at the National Institutes of Health (NIH) in Bethesda (USA) and assistant, associate and later personal professor at the department of Biochemistry of WU. She is a member of the Royal Netherlands Academy of Arts and Sciences (KNAW), of the Supervisory Board of Royal Wessanen and of the Scientific Advisory Board of the National Institute of Public Health & Hygiene (RIVM). She is also a member of many national and international advisory committees, including the Dutch Health Council, the Dutch Expert Committee on Occupational Standards (DECOS), the Senate Commission on Food Safety from the Deutsche Forschungsgemeinschaft (DFG, Germany) and the FEMA Expert Panel (USA). She has been chairman of the Dutch Society for Toxicology (NVT). From 2003 till May 2014 she has been member of various EFSA Panels (AFC, ANS, and CONTAM Panel and the SC) and many EFSA working groups. She has been a member of over 90 committees for evaluation of doctoral dissertations, promotor of 80 PhD students (30 of which ongoing) and she is author of over 350 scientific publications in refereed journals. She is editor of several international peer reviewed journals including Chemical Research in Toxicology, Environmental Toxicology and Pharmacology, Human and Experimental Toxicology, Molecular Nutrition and Food Research, Chemico-Biological Interactions and Food and Chemical Toxicology. Major topics of her research focus on 1) Risk evaluation of food ingredients including natural toxins and functional food ingredients, 2) Physiologically based kinetic and dynamic models for low dose cancer risk extrapolation and extrapolation of in vitro concentration response curves to in vivo dose response curves suitable for risk assessment, 3) Genetic polymorphisms and consequences of life style factors for individual sensitivity and risk assessment, 4) Development of mode-of action based bioassays for the detection of contaminants and beneficial health effects of food ingredients, 5) alternative methods for animal testing and 6) nanotoxicology.