Vitamin D Deficiency During Pregnancy Is Associated With Greater LDL-C Increase, Elevated β-Hydroxybutyrate and Altered Neonatal Metabolic Markers-A Secondary, Pooled Analysis of the Randomized, Controlled Vitamin D and Lifestyle for Gestational Diabetes Prevention Trial (DALI).

What Was Tested

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

Vitamin D (vitD) plays a role in metabolic regulation, including lipid metabolism and insulin sensitivity.

During pregnancy, profound physiological changes in lipid handling and ketogenesis occur to support fetal development.

Who Took Part

The study group was 962 women.

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

In this secondary analysis, the researchers examined lipid distribution throughout pregnancy-from before 20 weeks' gestation to delivery-in women with overweight or obesity, stratified by vitamin D status (deficiency, insufficiency, or sufficiency), assessing both maternal and cord blood.

Main inclusion criteria were: age > =18 years, singleton pregnancy, < 20 weeks' gestation, BMI ≥ 29 kg/m2.

How the Study Was Run

The researchers set it up as a randomized study.

Because people in this Vitamin D, K2, Magnesium and Zinc study were split into groups at random, differences between the groups are less likely to reflect who happened to join each one.

Women with GDM < 20 weeks' gestation were excluded.

VitD levels and lipid concentrations were assessed at < 20, 24-28 and 35-37 weeks' gestation and in cord blood.

What Was Measured

The subject headings attached to it are Vitamin D Deficiency, 3-Hydroxybutyric Acid, Diabetes, Gestational, Biomarkers, Cholesterol, LDL, Fetal Blood and Pregnancy Complications.

Author keywords: 25‐OH‐D3, LDL‐C, birth outcome, cord blood, lipids and pregnancy outcome.

What This Means in Plain Language

The paper is a randomized study of Vitamin D, K2, Magnesium and Zinc in 962 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 2026 (Endocrinology, diabetes & metabolism), a journal based in England.

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