Learn about radon, just how it affects lung health and wellness and what you can do about it. The only dose-effect partnership available are those of miners associates (for much greater exposures), subjected to radon. Research studies of Hiroshima and also Nagasaki survivors are much less informative (the direct exposure to radon is chronic, localized, as well as the ionizing radiations are alpha rays). Furthermore, the smoking cigarettes is a considerable confounding factor in all miners' studies. A questionable epidemiological research, unexpectedly showing reduced cancer threat vs. radon domestic exposure (5 pCi/L ≈ 200 Bq/m3).