Researchers probing the effects of radiation exposure among Japanese
atomic bomb survivors from Hiroshima and Nagasaki have discovered that even
moderate doses of radiation are associated with an increased risk of benign
and malignant nervous system tumors (J Natl Cancer Inst. 2002;94:1555-1563).
Researchers at the Radiation Effects Research Foundation in Hiroshima,
Japan, reviewed medical records of more than 80 000 Japanese survivors
of the attacks and identified benign and malignant tumors of the nervous system
and the pituitary gland that were diagnosed in this group between 1958 and
1995. They found that survivors of the attacks had a 6% greater chance of
developing a nervous system tumor over a lifetime.
Stephenson J. Atomic Bomb Survivors. JAMA. 2002;288(18):2257. doi:10.1001/jama.288.18.2257