Chernobyl discussions are void, by the lack of any reliable, verifiable studies.
What we know for sure is that the area now is a wildlife haven and "only" 48 deaths are to be attributed to the accident.
Also, the reports of deformities and cases of tyroid cancer were never proved to be statistically superior to the values for the same population before the accident.
Studies made with populations subjected to high radiation levels (airline flight attendants, for example) seem to indicate that there are levels of exposition that may even have beneficial health effects.