A 12-week double-blind randomized clinical trial of vitamin D₃ supplementation on body fat mass in healthy overweight and obese women.

What Was Tested

The paper reports a study of Vitamin D, K2, Magnesium and Zinc, published as a randomized controlled trial.

Vitamin D concentrations are linked to body composition indices, particularly body fat mass.

Relationships between hypovitaminosis D and obesity, described by both BMI and waist circumference, have been mentioned.

Who Took Part

The age groups tagged for this paper are adults and middle-aged adults, women only.

How the Study Was Run

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

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

As a double-blind Vitamin D, K2, Magnesium and Zinc study, the assignments were hidden from both participants and investigators until the end.

The comparison arm used a placebo, so changes seen with Vitamin D, K2, Magnesium and Zinc could be set against what happens without it.

Groups ran in parallel: each of the participants stayed in one arm throughout.

Body weight, height, waist, hip, fat mass, 25(OH) D, iPTH, and dietary intakes were measured before and after the intervention.

What Was Measured

The subject headings attached to it are 25-Hydroxyvitamin D 2, Adiposity, Body Mass Index, Calcifediol, Cholecalciferol, Dietary Supplements and Iran.

What This Means in Plain Language

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

Its findings take up roughly 5 sentences of the abstract and are left out here on purpose; the source paper is the place to read them.

The publication is from 2012 (Nutrition journal), a journal based in England.

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