This all sounded like BS to me. However, as a proper scientist, with a lab coat and everything, I have taken it upon myself to evaluate the claims made using a series of experiments devised after extensive research on the web.
My conclusion is that nothing I have found actually refutes the claims being made, and while my experiments have yet to prove them true I see no reason to disbelieve the marketing folks at this point.
If you want to include the claim 'Not unrecommended by a proper scientist' on the marketing literature, please feel free.