Can I also second Smickers' request to keep it civil because I don't want this thread to be closed - Yeddi and RSAHD (and others) thanks for engaging in this debate - it's really interesting and you both obviously have very informed views.

No, that's not what I said. I said the enzyme not being as effective would be the genetic component of these disorders. Something that obviously occurs in A blood types more, considering 8/10 autistic kids are A blood types and there is also a greater prevalence of diabetes amongst A and AB blood types too.
Is that seriously true? That is very interesting....