Until now there were only ancillary grabber* of the move of thyroid hormones from mother to fetus through the placenta during pregnancy. That event is very urgent because the maternal thyroid hormones appear to play a key role in the order of the nervous system and other organs of the fetus; so it's true that in case of maternal thyroid disease, such hypothyroidism, have a direct bearing on the unborn child with reduction, also significant, to its Q.I..

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