Vitamin D supplementation during pregnancy for the prevention of pre-eclampsia
Vitamin D comes primarily from exposure to sunlight. It is found in only a few foods such as oily fish, eggs and fortified dairy products.
Vitamin D deficiency in pregnant women has been associated with an increased risk of pre-eclampsia and gestational diabetes. Observational studies suggest that vitamin D levels during pregnancy influence fetal bone development and children’s growth, although it is not clear if maternal vitamin D deficiency leads to neonatal rickets.
To improve maternal and fetal vitamin D status during pregnancy, several health agencies have recommended vitamin D supplementation for pregnant women. However, there is significant variation in the dosage recommendations and the effects and safety of vitamin D supplementation during pregnancy are undergoing review. At this time, WHO does not recommend vitamin D supplementation to prevent the development of pre-eclampsia and its complications during pregnancy.
Vitamin D supplementation in pregnant women
WHO recommendations for prevention and treatment of pre-eclampsia and eclampsia