Doris Marko is Prof. of Food Chemistry and Head of the Institute of Food Chemistry and Toxicology, Faculty of Chemistry at the University of Vienna, Austria. She studied Food Chemistry at the University of Kaiserslautern, Germany. Starting in the field of preclinical drug development, she acquired profound expertise in the elucidation of molecular mechanism of bioactive constituents arising from natural sources focusing predominantly on anticarcinogenic and chemopreventive effects. The research strategy aims at substantiation of beneficial health effects ranging from basic molecular models to the development of respective in vivo biomarkers, but also include the assessment of potentially undesired application-limiting effects. She is member of several commissions on food safety, including the Senate Commission of the German Research Foundation for Food Safety (SKLM) as well as the committee for contaminants and other undesirable substances in the food chain of the BfR, Germany.