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Nutrients 2016, 8(10), 641; doi:10.3390/nu8100641

Association between Maternal Zinc Status, Dietary Zinc Intake and Pregnancy Complications: A Systematic Review

1
Robinson Research Institute, University of Adelaide, Adelaide SA 5005, Australia
2
Adelaide Medical School, University of Adelaide, Adelaide SA 5005, Australia
3
Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Adelaide SA 5005, Australia
*
Author to whom correspondence should be addressed.
Received: 29 August 2016 / Revised: 27 September 2016 / Accepted: 29 September 2016 / Published: 15 October 2016
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Abstract

Adequate zinc stores in the body are extremely important during periods of accelerated growth. However, zinc deficiency is common in developing countries and low maternal circulating zinc concentrations have previously been associated with pregnancy complications. We reviewed current literature assessing circulating zinc and dietary zinc intake during pregnancy and the associations with preeclampsia (PE); spontaneous preterm birth (sPTB); low birthweight (LBW); and gestational diabetes (GDM). Searches of MEDLINE; CINAHL and Scopus databases identified 639 articles and 64 studies were reviewed. In 10 out of 16 studies a difference was reported with respect to circulating zinc between women who gave birth to a LBW infant (≤2500 g) and those who gave birth to an infant of adequate weight (>2500 g), particularly in populations where inadequate zinc intake is prevalent. In 16 of our 33 studies an association was found between hypertensive disorders of pregnancy and circulating zinc; particularly in women with severe PE (blood pressure ≥160/110 mmHg). No association between maternal zinc status and sPTB or GDM was seen; however; direct comparisons between the studies was difficult. Furthermore; only a small number of studies were based on women from populations where there is a high risk of zinc deficiency. Therefore; the link between maternal zinc status and pregnancy success in these populations cannot be established. Future studies should focus on those vulnerable to zinc deficiency and include dietary zinc intake as a measure of zinc status. View Full-Text
Keywords: zinc; pregnancy; pregnancy complications; dietary zinc intake; circulating zinc zinc; pregnancy; pregnancy complications; dietary zinc intake; circulating zinc
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MDPI and ACS Style

Wilson, R.L.; Grieger, J.A.; Bianco-Miotto, T.; Roberts, C.T. Association between Maternal Zinc Status, Dietary Zinc Intake and Pregnancy Complications: A Systematic Review. Nutrients 2016, 8, 641.

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