As we read statements from the World Health Organization minimizing the health risks from the radioactive contamination caused by the Fukushima disaster, it is well to remember how firmly the WHO's hands are tied by the International Atomic Energy Agency. Here is a good piece from The Guardian's Oliver Tickell published in May 2009 which states:
Fifty years ago, on 28 May 1959, the World Health Organisation's assembly voted into force an obscure but important agreement with the International Atomic Energy Agency – the United Nations "Atoms for Peace" organisation, founded just two years before in 1957. The effect of this  agreement has been to give the IAEA an effective veto on any actions by  the WHO that relate in any way to nuclear power – and so prevent the  WHO from playing its proper role in investigating and warning of the  dangers of nuclear radiation on human health.
The WHO's objective  is to promote "the attainment by all peoples of the highest possible  level of health", while the IAEA's mission is to "accelerate and enlarge  the contribution of atomic energy to peace, health and prosperity  throughout the world". Although best known for its work to restrict  nuclear proliferation, the IAEA's main role has been to promote the  interests of the nuclear power industry worldwide, and it has used the  agreement to suppress the growing body of scientific information on the  real health risks of nuclear radiation. Read the full article.