On October 16-20, 2017 a conference on "Mediterranean Diet & Health, A Nutrition Odyssey in Greece" was held in Halkidiki. In the context of the conference, Prof. A. Trichopoulou, President of the HHF, together with Prof. R. Estruch and Prof. W. Willett, participated in a roundtable on "Mediterranean Diet: Past, Present and Future".