Vitamin D supplementation and growth in urban Mongol school children: Results from two randomized clinical trials.

What Was Tested

This randomized controlled trial looks at Vitamin D, K2, Magnesium and Zinc.

The researchers tested the impact of vitamin D-supplementation on serum concentrations of 25-hydroxyvitamin D [25(OH)D] and short-term growth in Mongol children, with very low serum vitamin D levels in winter.

Why It Was Studied

It is unknown whether vitamin D repletion in children with asymptomatic serum vitamin D deficiency can restore normal growth.

Who Took Part

The abstract describes 113 children taking part.

The age groups tagged for this paper are children and teenagers, both men and women.

The researchers conducted two randomized, double-blind, placebo-controlled trials in urban school age children without clinical signs of rickets.

How the Study Was Run

The design is described as randomized, double-blind and placebo-controlled.

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

Blinding on both sides kept the children and researchers unaware of who received Vitamin D, K2, Magnesium and Zinc.

Some children received a placebo instead of Vitamin D, K2, Magnesium and Zinc, giving a reference point.

What Was Measured

Topics PubMed links to this paper include Growth, Mongolia, Urban Population and Vitamin D.

What This Means in Plain Language

The paper is a randomized, double-blind and placebo-controlled study of Vitamin D, K2, Magnesium and Zinc in 113 children.

The abstract goes on to report its results in about 7 sentences; this page does not restate them, so read the paper for the findings and their limits.

The publication is from 2017 (PloS one), a journal based in United States.

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