Hey, chemotherapy included in your rent!
According to the article, researchers speculate that low radiation doses may ironically immunize the body from cancer and birth defects by stimulating the body’s repair mechanisms into greater responsiveness, just as vaccines stimulate the immune system.
That would explain the low cancer rates of residents in the Taiwanese apartments who experienced 10 times the level of radiation as is prevalent in the evacuation zone.
Maybe radon mines are not such a bad idea. :-)