Head of the NGO Praeventio, Tartu, Estonia.

Katrin Sak, M.Sc., Ph.D., Dip.Nut.Med. is an Estonian scientist and independent researcher working in the field of anticancer actions of natural products, especially plant polyphenols and flavonoids. She is the author of more than a hundred articles published in international peer-reviewed journals and numerous chapters in handbooks about nutraceuticals and cancer.