Personally, I never lent any credence to anything he said more than I would any other person's writing off the street. I never understood why he was given so much latitude in the first place. He's not a scientist. He is not published in the academic community. He has no research facilities nor has he been awarded any grant towards research by any reputable institution that I'm aware of. So then, I ask, where is this information truly coming from?
I'm not saying a person requires everything listed above to deserve credit for hard work but if you don't have the credentials to back your writing, than at least show enough professionalism to be taken seriously. When I read these little he-said, she-said pissing matches, it just serves to bring down any credibility that a person has built over time. It's sad really. Now you're combining a lack of credentials with a lack of professionalism. Add once again the fact that we are dealing with what can potentially be very dangerous chemicals and practices and you know what do you have? You have an imminent disaster just waiting to happen. And who foots the bill? You do.
So given the lack of academic credentials combined with the apparent lack of any type of professionalism, a person should be very guarded about how much weight one puts on anything an individual or institution has written and sold. It's a "buyer-beware" scenario at best and a complete scam at worst. Be careful. You can find most of the answers to your questions for free at any public or campus library. It’s a completely unnecessary risk to spend money on OPINIONS of extremely questionably origin.
It’s likely you’ll just feel the momentary sting of getting ripped off but dollars can be replaced. Your health cannot be replaced. If you ARE going to place your health in someone else’s hands, just make certain you know exactly whose hands you are placing your health in.