Background. The high prevalence and negative effects of vitamin D deficiency is a problem for a wide range of specialists worldwide. Pregnant and lactating women are at risk for vitamin D deficiency, as evidenced by the results of many epidemiological studies. Vitamin D plays an important role in providing the mother-placenta-fetus system, including implantation, placenta formation, embryogenesis, intra- and postnatal periods. Vitamin D deficiency leads to placental insufficiency, low birth weight, gestational diabetes, premature birth, preeclampsia, and an increase in the inflammatory response.The purpose of the study: an analytical review of the role and importance of vitamin D during pregnancy in modern scientific literature.Materials and methods. An analysis of 18 foreign literary sources on this topic was carried outConclusion. Vitamin D plays an important role in the system of pregnant women, the placenta and the fetus, especially during implantation, placenta formation, embryogenesis, intra- and postnatal period. According to the literature review: Low level 25 (ON) D has an adverse effect on the course of pregnancy, outcome, fetal development, and infant health. Eliminating vitamin D deficiency has a positive effect on pregnancy outcomes and baby's health, i.e. serious complications during pregnancy - preeclampsia, gestational diabetes, placental insufficiency, chronic infection and other diseases are significantly reduced.
25 (OH) 2D, 1.25 (OH) 2D, vitamin D deficiency, preeclampsia, gestational diabetes
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