Vitamin D during pregnancy and risk of prematurity

According to recent studies, maternal hypovitaminosis D during pregnancy may be linked to an increased risk of prematurity. The evidence for this association and the underlying mechanisms remain to be demonstrated. In this systematic literature review, researchers will compile and analyze available data on vitamin D levels in pregnant women and the risk of prematurity. The data are collected over the time span from January 2018 to November 2022. Two experts will evaluate the data and studies before conducting the meta-analysis. Confirming the link between vitamin D status in pregnant women and the risk of prematurity could lead to new nutritional recommendations during pregnancy.