Make no mistake that Fukushima will go away and everything will be normal. And radiation damage can be lethal in the short term and also in the long term.
There is, however, hope and tested solutions are avaiable. These are being tried out and people are recovering as doctors inform us. The role of Vitamin C in preventing and reversing oxidative damage has been known for many decades but was ignored, later expunged, by industry driven medical tomes.
This posting has a set of four short videos and many useful links to research papers. Worth copying it for future reference.