Iris, baby, you are mistaken.
The main cancer-causing problem in Russia and Ukraine is smoking, not fallout from Chernobyl.
If Russia had spent a tiny fraction of the Cher money on a serious "stop-smoking" campaign, the large cancer rates (and the smoking-derived low male fertility) would have long since disappeared. The increased cancer risk from living near Chernobyl now, is equivalent to a heavy smoker smoking an extra one cigarette per month.
The Japanese people who were exposed to, but survived, the fallout from the atom bombs, have actually had healthier lives, on average, than the JP population generally. This has been attributed to their health being so closely monitored.
Moral: if you really want a long healthy life and lotsa kids, stop smoking and get regular check-ups. Ignore barely measurable exposures to radiation.