Mark,
I'm not taking the bait. There were some interesting articles (positive) about them on the MSKCCC and ACS site so who knows - maybe they'll end up in the chemo-preventive category? There is real scientific research going on about it (the the US as well). Many pharmaceuticals come from plants and different organic things but for it to become a "drug" the science has to be there, as well as safety and efficacy studies- not just testimonials.

Quackwatch was assailing claims made by health food store workers which are notorious for disseminating bad and false information. They didn't have anything on the mushrooms themselves.

As an adjunct to regular and proven therapy it is a personal decision to make. To replace or substitute proven therapy is a danger that cannot be overemphasized.