I do understand that China has a horrible record of environmental pollution and that there is little or no regulatory system there. I also know that China is where developing countries ship our discarded electronic devices, batteries, and other corrosive materials that we do not want in our landfills.
SO....we have our little Kai. We know that it is possible that his delays are the result of something neurotoxic (such as manganese, cadmium, or another metal), but have come to the realization that finding out and treating something of the sort would be very invasive, if not potentially fatal (I'm talking about Chelation therapy: http://en.wikipedia.org/wiki/Chelation_therapy).
So....What do we do with this partial information? Take it for what it is..... a theory. AND we help Kai by getting him the best treatment for his multifaceted needs. (Endocrine problems are another issue....again, potentially the result of environmental neurotoxins) I am again thankful that we have medical insurance and medicaid for our little guy.