Hmmmm interesting. Funny you mention it because I was taking gaba not too long ago and it was in a mixture with some other stuff. Anyways, I think it was causing me to wake up kind of uncoordinated and feeling just kind of weird. Dissociative I guess you could say, which makes sense because it’s related to the NMDA receptors somehow I think. It supposedly “can’t” cross the blood brain barrier, at least this is repeated despite the fact that it can and does, it’s just an unreliable mechanism in which it does. Low levels of gaba were insinuated to absorb more in the brain also. I didn’t have this issue as if I took the full 750 mg I felt very strange consistently and none of the other supplements in the mixture would seem to do this.
Pregnancy -- Low levels of vitamin D in pregnancy are associated with gestational diabetes , pre-eclampsia , and small infants.  Although taking vitamin D supplements during pregnancy raises blood levels of vitamin D in the mother at term,  the extent of benefits for the mother or fetus is unclear.    Pregnant women who take an adequate amount of vitamin D during gestation may experience a lower risk of pre-eclampsia  and positive immune effects.  Pregnant women often do not take the recommended amount of vitamin D. 
I appreciate this article. I think that she makes excellent, educated points. I am an educator and have read many books agreeing with them. Frankly, I am disappointed by the negative responses since we always have room to improve as parents. Saying good job creates children who do good things for approval, rather for their own gain and improvement. You are passing judgement on their work. Telling a child why something isn’t okay rather than saying no, helps children understand why the behavior needs to be stopped and prevents it from happening again. Understanding these points doesn’t weaken children, it strengthens them and helps them become independent thinkers and well-behaved children. There is nothing wrong with becoming a more informed parent.