I've also been curious about the Colloidal Gold as I recently started reading up on silver. What I'm concerned about is the gold staying in the brain and causing problems in the long run. Does the Colloidal Gold do that? I've heard a few scare stories about metal toxicities, and gold in the brain was one. (Like the "House" episode where a woman is poisoning her husband with gold that was supposed to be used for Arthritis but she was using it to cause him brain problems and try to murder him ... a fictional show, of course, but maybe based in fact?) But I also know scare stories can often be just that ... stories, especially when health related.
From what you know (as I know you are very thorough on your research, and I'm having trouble filtering through the hogwash myself that is out there), can you help distinguish the fact from the fiction?
If there is some basis in truth to the gold remaining in the brain and causing problems, can we take the CG, get the benefits, then chelate out the gold and not lose the benefits we'd gained, basically taking the good with the bad, then ousting the bad to just retain the good?