Vitamin D content in human breast milk: a 9-mo follow-up study.

What Was Tested

The paper reports a study of Vitamin D, K2, Magnesium and Zinc, published as an observational study.

The researchers explored concentrations of ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3) (vitamin D) and 25-hydroxivitamin D2 plus D3 (25-hydroxyvitamin D [25(OH)D]) in foremilk and hindmilk during the first 9 mo of lactation and identified indexes of importance to the concentrations.

Why It Was Studied

Parents are advised to avoid the direct sun exposure of their newborns.

Therefore, the vitamin D status of exclusively breastfed newborns is entirely dependent on the supply of vitamin D from breast milk.

Who Took Part

The age groups tagged for this paper are infants, young adults and adults, women only.

How the Study Was Run

The researchers collected blood and breast-milk samples from mothers at 2 wk (n = 107), 4 mo, (n = 90), and 9 mo (n = 48) postpartum.

Blood samples from infants were collected 4 and 9 mo after birth.

The researchers measured concentrations of vitamin D metabolites in blood and milk samples with the use of liquid chromatography-tandem mass spectrometry.

What Was Measured

PubMed files the paper under topics including Breast Feeding, Calcifediol, Cholecalciferol, Dietary Supplements, Energy Intake, Ergocalciferols and Infant Nutritional Physiological Phenomena.

Author keywords: breastfeeding, infants, rickets and vitamin D.

What This Means in Plain Language

This is an observational study of Vitamin D, K2, Magnesium and Zinc.

Its findings take up roughly 9 sentences of the abstract and are left out here on purpose; the source paper is the place to read them.

The publication is from 2016 (The American journal of clinical nutrition), a journal based in United States.

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