Vitamin D Update: Supplementation and Pregnancy and Perinatal Outcomes and 25-hydroxy-vitamin D as a Marker for Nutrient Deficiency and Sufficiency

Vitamin D has been a very active area of research in recent decades. Not only have there been numerous research studies published, there have also been numerous systematic reviews published summarizing these studies. Recently, researchers in Alberta, Canada undertook a systematic review of the systematic reviews that investigated the importance of vitamin D in pregnancy for important perinatal and infant outcomes (1).

This systematic review of systematic reviews found 42...