"If it hadn't been for so many parents insisting that vaccines were responsible for the condition, we might never have found the fact that the stabilizer in MMR and a few other vaccines is hydrolyzed gelatin; a substance that is approximately 21% glycine. It appears that, based on readily verifiable science, the use of that form of glycine triggers an imbalance between the amino acid neurotransmitters responsible for the absorption rate of certain classes of cells throughout the body. It is that wide-spread disruption that apparently results in the systemic problems that encompass the mind and the body characterized in today's 'classic' autism."
It's the tip of the iceberg. Yes, it's verifiable that glutamate/glycine pathology is evident, however there are so many more variables to substantiate.
For e.g., why the 4:1 ratio of male to female?
The genetic predisposition to such reactions to this neurotransmitter imbalance is yet to be deciphered...why did Tommy get autism when Jimmy had the same shots and did not?
I applaud both their application and determination to discover the why's and wherefore's, however the rabbit hole is a LOT deeper.
JMO - I work with these kids. It's life changing to be the parent(s) of these children. Something else is going on.