For those with an interest in this area, this preliminary research found that a rise in TSH and low T4 - but both, I think, "within range" were associated with autistic type characteristics in one year olds. This is very preliminary research, and they need to look at older children, because high functioning autism is often not spotted until boys are about nine or ten.
However it is further fuel for the view that "sub clinical" states of hypoT can have very serious impacts, and should not be dismissed, especially in women of child bearing age.
I think it also adds a lot of weight to the view that those of us with hypoT and daughters should get them tested before they embark on pregnancies. Because the NHS doesn't do it.
The low T4 might be the really significant bit.
Apologies if it has been posted before.