Note that this view of "cumulative ratiation" is a myth, and a costly one. A recent note on this: http://atomicinsightscom.c.presscdn.com/wp-content/uploads/Cut

Note that this view of "cumulative ratiation" is a myth, and a costly one. A recent note on this: http://atomicinsightscom.c.presscdn.com/wp-content/uploads/Cuttler-2014_-Leukemia-incidence-of-96000-Hiroshima-survivors_ArchToxicol.pdf http://atomicinsightscom.c.presscdn.com/wp-content/uploads/C... (there's not only a treshold, there may also be some hormesis, i.e. a slight decline in cancer rate for small doses)