Low levels of radiation are beneficial to Humans

On the quest to find benefits of radiation, I came across an interesting article in the Journal of American Physicians and Surgeons. It goes over an unitented radiation experiment that was done to dwellers of 1700 apartment units in Taiwan. Steel at a recycling plant was accidentally mixed with steel that was exposed to radiation and later used in the construction of more the 180 buildings, exposing over 10,000 people  to effects of low-level radiation.  During period ranging between 9 and 20 years, people living in these apartments experienced unusually low levels of health problems and low cancer rates.

http://www.scienceboard.net/community/perspectives.122.html