As mentioned in the prior post, the World Health Organization ends letting people know they need to test when the concentration level of radon reaches ~ 2.6 pCi/L of radon (whereas the U.S. EPA focuses on 4.0 pCi/L). Through studies showing that radon is primary in causing lung cancer among non-smokers (or even more strict those who have never smoked) WHO estimates that the risk runs up 16% for every 2.7 increase.
There is a consensus that radon exposure severely leads to lung cancer. Organizations such as the U.S. Surgeon General, National Academy of Sciences, Center for Disease Control and Disease Prevention along with American Medical Association all concur of the danger. The challenge is conveying that there are ways of reducing radon and an impetus to lower whatever you can with the amount of access you have to a basement slab crawlspace.
Think of this- given the dangers of CO2 poisoning, if you knew that your home had odorless, tasteless and unseen carbon monoxide, wouldn’t you do what you could to stem the cause, or at least the infiltration with several attempts and a way of monitoring it? Take a look at our online publication and call if you have any questions about it… https://www.uaf.edu/files/ces/publications-db/catalog/eeh/RAD-00760.pdf
Toll Free Alaska Radon Hotline Number: 1-877-520-5211