Re: Radon-Stirring the Pot

[BERNARD L COHEN <blc+@PITT.EDU>]

On Thu, 19 Sep 2002, Estabrooks, Bates (IHK)  wrote:



> Radsafers,



> 1. Where did the claim that radon is the "second leading cause of lung

> cancer in the United States" originate?



	--It has been used for years by EPA. It is demonstrably correct if

you assume validity of the linear-no threshold theory.



>

> 2. How is this claim experimentally substantiated?



	--The radon levels are experimentally verified. The use of

linear-no threshold theory to predict cancer risk from low level exposure

is not experimentally verified.



>

> 3. Has this claim been proven via epidemiological studies (vs. ecological)?

> (Warning: Since I'm "not an epidemiologist" I may be revealing my profound

> ignorance.)



	--No



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