comparison of serum 25-hydroxy vitamin d levels between mothers with small for gestational age and appropriate for gestational age newborns in kerman

background: vitamin d deficiency during pregnancy is associated with some adverse pregnancy outcomes but its relationship with fetal growth is unknown. objective: we compared the 25-hydroxy vitamin d levels between mothers and their small for gestational age (sga) newborns with mothers and their appropriate for gestational age (aga) newborns. materials and methods: the study population included pregnant women that referred to afzalipour hospital in kerman from 2012 to 2013. the case and control group consisted of 40 pregnant mothers with sga and aga newborns, respectively. the maternal and infants 25-hydroxy vitamin d levels were measured in the two groups. results: 25-hydroxy vitamin d deficiency (<20 ng/ml) was statistically higher in women with sga newborns in comparison to women with aga newborns (p=0.003).vitamin d deficiency was higher among the sga newborns in comparison to aga newborns (25% vs. 17.5%), although this finding was not statistically meaningful (p=0.379). the relationship of vitamin d deficiency levels between mothers and infants in both the sga group and the aga group was significant. conclusion: our study reveals a high prevalence of vitamin d deficiency in women with sga infants in comparison to women with aga children. in addition, maternal vitamin d deficiency is associated with its deficiency in newborns.