Vitamin D, the sun vitamin, is essential for human health
Researchers are showing us how important it is for pregnant females and their children's brain development.
Different studies have shown that deficiencies of vitamin D during the different trimesters of the pregnancy can bring undesired outcomes for the offspring:
Deficiency during the first trimester correlated to lower language and cognitive performance of the children.
Deficiency during the second trimester brought lower IQ scores in children of 4-6 years of age
Deficiency during the third trimester resulted in deficient motor skills
In my experience, levels of vitamin D3 between 50 and 80 ng/dl are mandatory
Links:
https://www.mdpi.com/2072-6643/12/10/3196
https://academic.oup.com/jn/article/151/1/132/5951845
References:
Nutrients. 2020 Oct 19;12(10):3196. doi: 10.3390/nu12103196.
J Nutr. 2021 Jan 4;151(1):132-139. doi: 10.1093/jn/nxaa309.