Typical prenatal vitamin D supplement intake does not prevent decrease of plasma 25-hydroxyvitamin D at birth.

What Was Tested

This randomized controlled trial looks at Vitamin D, K2, Magnesium and Zinc and Copper (Supplement).

The objective of this longitudinal study was to determine what typical vitamin D predictors influence the change in vitamin D status from mid-pregnancy to birth.

Who Took Part

PubMed indexes the participants as teenagers, young adults and adults, women only.

Usual predictors of vitamin D status [body mass index (BMI), race, season] in addition to prenatal supplemental vitamin D intake and docosahexaenoic acid (DHA) status at delivery were assessed for their interaction on the change on plasma 25(OH)D concentration between the two time points.

How the Study Was Run

The design is described as randomized.

The participants were allocated by chance, so the Vitamin D, K2, Magnesium and Zinc group and the comparison group should start out alike.

Plasma 25-hydroxyvitamin D [25(OH)D] was determined at mid-pregnancy (8-20 weeks gestation) and following birth (n = 193).

What Was Measured

Topics PubMed links to this paper include Dietary Supplements, Longitudinal Studies, Pregnancy Complications, Prenatal Care, Prevalence, Seasons and Sunlight.

Author keywords: insufficiency, supplements and functional foods and vitamin D.

What This Means in Plain Language

The paper is a randomized study of Vitamin D, K2, Magnesium and Zinc and Copper (Supplement).

The abstract goes on to report its results in about 6 sentences; this page does not restate them, so read the paper for the findings and their limits.

The publication is from 2014 (Journal of the American College of Nutrition), a journal based in United States.

More context: the Vitamin D, K2, Magnesium and Zinc compound page and the Copper (Supplement) compound page, all human trials.