[Introcution to the Topic "The Problem of Cancer" (author's transl)]

How will things progress with cancer? Main facts: cancer increase until 1964. Reversal of sexual proportion (now greater mortality of men). Cancer of different organs changing their relative frequency. In 80% cancer acquired. Enviromental carcinogenes. Percental increase of cancer without carcinogenes by decreasing causes of death (infectious diseases). Future problem: Experimental cancer prevention (tests upon germinal cells for mutagenicity). Since 1964 the level of cancer mortality has remained constant. Decrease is in sight: an anti-cancer future has begun.