ArticlePloS one2016
Vitamin D Status during Pregnancy: A Longitudinal Study in Swedish Women from Early Pregnancy to Seven Months Postpartum.
Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 3 of them syntheses that pooled it.
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Who cites it
37 citing papers in PubMed, 3 syntheses or guidelines pooled it, 56 citations in OpenAlex.
- Vitamin D levels and its influencing factors in pregnant women in mainland China: A systematic review and meta-analysis.PloS one · 2024Pooled it
- Pooled it
- Vitamin D-Related Risk Factors for Maternal Morbidity and Mortality during Pregnancy: Systematic Review and Meta-Analysis.Nutrients · 2022Pooled it
- Article
- Is there a correlation between the severity of symptoms and vitamin D levels in pregnancy with hyperemesis gravidarum?Turkish journal of obstetrics and gynecology · 2025Article
- The potential impact of the extended vitamin D fortification policy during pregnancy varies by continent of origin - a population-representative Swedish cohort.European journal of nutrition · 2025Article
- The Impact of Vitamin D Deficiency on Gestational Diabetes Mellitus Risk: A Retrospective Study.Cureus · 2024Article
- The association between maternal vitamin D deficiency and postpartum hemorrhage and uterine atony.Acta obstetricia et gynecologica Scandinavica · 2024Article
- Supplement use in relation to dietary intake in pregnancy: an analysis of the Swedish GraviD cohort.The British journal of nutrition · 2024Article
- Maternal plasma vitamin D levels across pregnancy are not associated with neonatal birthweight: findings from an Australian cohort study of low-risk pregnant women.BMC pregnancy and childbirth · 2023Article
- Vitamin D intake and determinants of vitamin D status during pregnancy in The Norwegian Mother, Father and Child Cohort Study.Frontiers in nutrition · 2023Article
- Changes in Sleep Patterns during Pregnancy and Predictive Factors: A Longitudinal Study in Saudi Women.Nutrients · 2022Article
- Review
- Maternal and Neonatal 3-epi-25-hydroxyvitamin D Concentration and Factors Influencing Their Concentrations.Journal of the Endocrine Society · 2022Article
- Dietary Intake in Early Pregnancy and Glycemia in Late Pregnancy among Women with Obesity.Nutrients · 2021Article
- Associations between vitamin D levels and glucose metabolism markers among pregnant women and their infants in Puerto Rico.Nutricion hospitalaria · 2021Article
- Maternal Vitamin D and Newborn Telomere Length.Nutrients · 2021Article
- Vitamin D Status and Its Determinants in Mexican Pregnant Women from a Rural and an Urban Area: A Comparative Study.International journal of environmental research and public health · 2021Article
- Effect of Vitamin D Status during Pregnancy on Infant Neurodevelopment: The ECLIPSES Study.Nutrients · 2020Article
- Vitamin D Deficiency in Mexican Pregnant Women: Is Supplementation with ≤400 IU/day Enough?Nutrients · 2020Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Low vitamin D levels during pregnancy may have negative consequences for the health of both the mother and child. Cross-sectional studies in childbearing women suggest that vitamin D levels are low during pregnancy, but few studies have followed the same women during pregnancy and postpartum. The aims of this study were to longitudinally assess vitamin D status during pregnancy and postpartum and identify the factors associated with vitamin D status in pregnant women in northern Sweden. Between September 2006 and March 2009, 184 women were consecutively recruited at five antenatal primary care clinics. Blood was sampled, and dietary intake was estimated using a food frequency questionnaire with 66 food items/food aggregates and questions on the intake of vitamin supplements at gestational weeks 12, 21, and 35, as well as at 12 and 29 weeks after birth. Plasma 25(OH) vitamin D levels were analyzed using liquid chromatography tandem-mass spectrometry. At least one-third of the women had 25(OH) vitamin D levels <50 nmol/L on at least one sampling occasion. Plasma levels increased slightly over the gestation period and peaked in late pregnancy. The levels reverted to the baseline levels after birth. Multivariate analysis showed that gestational and postpartum week, season, dietary intake of vitamin D, and vitamin supplementation were significantly related to plasma levels. There was also an influence of season on the longitudinal concentration patterns. In conclusion, more than one-third of the women studied had low 25(OH) vitamin D levels, and gestational and postpartum week was related to 25(OH) vitamin D levels after adjustment for season and vitamin D intake.
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