Prepregnancy habitual intake of vitamin D from diet and supplements in relation to risk of gestational diabetes mellitus: A prospective cohort study.

What Was Tested

This observational study looks at Vitamin D, K2, Magnesium and Zinc.

Vitamin D may play a pivotal role in regulating insulin secretion and insulin sensitivity.

However, the effect of vitamin D intake, either from the diet or from supplements, on the development of gestational diabetes mellitus (GDM) remains unclear.

Who Took Part

According to the abstract, 15,225 women were involved.

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

The present study was performed on 21 356 singleton pregnancies from 15 225 women in the Nurses' Health Study II cohort.

Diet information, including vitamin D intake from food sources and supplements, was assessed in 1991 and every 4 years thereafter by validated food frequency questionnaires.

What Was Measured

Topics PubMed links to this paper include Age Factors, Diabetes, Gestational, Diet, Dietary Supplements, Incidence, Life Style and Maternal Nutritional Physiological Phenomena.

The authors tagged it with the keywords gestational diabetes mellitus, preconception, vitamin D, 妊娠糖尿病, 孕前 and 维生素D.

What This Means in Plain Language

This is an observational study of Vitamin D, K2, Magnesium and Zinc in 15,225 women.

With several hundred people or more, it is a fairly large study for this kind of research.

The abstract goes on to report its results in about 5 sentences; this page does not restate them, so read the paper for the findings and their limits.

The publication is from 2018 (Journal of diabetes), a journal based in Australia.

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