However there is no medical research today ( these studies are both almost ten years old ) that proves any link whatsoever between ALS and Radon. Neither is Radon proven to affect the central nervous system ( which for instance radiation is ). There are however geographical clusters where ALS is more prominent, and this is what CDEG investigates, among other things.
GregK. I didn't see anything regarding radon. Sorry. I lost my husband in 2009 to ALS and now my best friend has it. Trying to link the two together somehow. Hoping to help anyone from having to deal with this horrible condition in the future.