Vitamin D insufficiency is prevalent among pregnant women and infants
worldwide. Expectant mothers with a heightened risk of vitamin D deficiency may
have notably low levels of 25-hydroxyvitamin D (25(OH)D) in their newborns, raising
the likelihood of nutritional rickets. Numerous observational studies suggest a link
between inadequate vitamin D levels during pregnancy and various adverse perinatal
outcomes such as hypertensive disorders (like preeclampsia), restricted fetal growth,
and premature birth. Nevertheless, the limited number of large-scale randomized
controlled trials (RCTs) conducted so far have produced conflicting findings regarding
the effectiveness of vitamin D supplementation in enhancing perinatal outcomes.
Keywords: Breastfeeding, Gestational diabetes, Pregnancy, Preterm, Preeclampsia, Supplement.
