Julian Aleksandrowicz (Polish pronunciation: [ˈju.ljan a.lɛk.sanˈdrɔ.vit͡ʂ]; 1908 Kraków –1988 Kraków) was a Polish medical professional, professor of medicine, and a notable specialist on leukemia. He is known for having developed concepts of comprehensive psychotherapy of persons suffering from somatic diseases, as well as of the ecological prevention of cancer and leukaemia. Aleksandrowicz was of Jewish descent, and after German invasion of Poland (during which he fought in the 72nd Infantry Regiment), he was imprisoned in the Kraków Ghetto (he managed to bury his research data beforehand a