Vitamin D status during normal pregnancy and postpartum. A longitudinal study in 141 Danish women
-
Nils Milman
,
Anne-Mette Hvas
Abstract
Background/objectives: To assess vitamin D status during normal pregnancy and in the postpartum lactation period.
Subjects/methods: The study comprised 141 healthy, ethnic Danish women with normal pregnancies, who were residents in Greater Copenhagen. Serum 25-hydroxy-vitamin D2+D3(25-OH-vitamin D) was measured at 18, 32 and 39 weeks’ gestation and 8 weeks postpartum.
Results: There was a significant increase in 25-OH-vitamin D from 18 to 32 weeks’ gestation (P=0.0001) followed by a significant decrease from 32 to 39 weeks (P=0.001) as well as from 39 weeks to 8 weeks postpartum (P<0.0001). At 18, 32, 39 weeks’ gestation and 8 weeks postpartum, median 25-OH-vitamin D values were 77, 98, 91, and 73 nmol/L, respectively. During pregnancy and postpartum, none of the women displayed severe vitamin D deficiency (values <13 nmol/L). Between 1.4% and 4.3% of the participants displayed moderate vitamin D deficiency (values 13–24 nmol/L), 16–19% displayed vitamin D insufficiency (values 25–50 nmol/L), 77–84% had values >50 nmol/L and 0.7–2.8% had values >200 nmol/L.
Conclusions: Low vitamin D status is frequent among pregnant Danish women, especially in late pregnancy and during lactation. Median dietary intake of vitamin D in women of reproductive age was 2.4 μg/day (10–90 percentile range=1.4–5.0). The recommendations for vitamin D supplementation prior to conception, during pregnancy and lactation should be reconsidered.
©2012 by Walter de Gruyter Berlin Boston
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Artikel in diesem Heft
- Review article
- WAPM Working Group on Nutrition: Potential chronobiotic role of human milk in sleep regulation
- Opinion Paper
- “Every case of asphyxia can be used as a learning example”. Conclusions from an analysis of substandard obstetrical care
- Original Articles – Obstetrics
- Hematologic profile of the fetus with systemic inflammatory response syndrome
- Optimized amniotic fluid analysis in patients suspected of intrauterine infection/inflammation
- Risk factors for preterm delivery with placenta previa
- Recombinant human factor VIIa prevents hysterectomy in severe postpartum hemorrhage: single center study
- Combination antiretroviral therapy with protease inhibitors in HIV-infected pregnancy
- Vitamin D status during normal pregnancy and postpartum. A longitudinal study in 141 Danish women
- The impact of the time interval between two successive deliveries in an obstetric unit in terms of the mode of each delivery and the rate of perinatal mortality
- Original Articles – Fetus
- Terbutaline: effects on the fetal heart at term
- Parallel maternal and fetal immune activation by bacterial toxins in vitro
- Original Articles – Newborn
- Prepregnancy body mass index, socioeconomic status, race/ethnicity and breastfeeding practices
- Fetal and neonatal outcome in patients with anterior abdominal wall defects (gastroschisis and omphalocele)
- Total serum bilirubin level in umbilical cord blood and respiratory distress syndrome in very low birth weight infants
- Short Communication
- Improved overall delivery documentation following implementation of a standardized shoulder dystocia delivery form
- Letters to the Editor
- Prevention of prematurity – a complex undertaking
- Prevention of prematurity – a complex undertaking reply
- Congress calendar
- 10.1515/JPM-2011-1000
