GLV supplements increased plasma beta-carotene, vitamin C, zinc and hemoglobin in young healthy adults.

What Was Tested

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

To investigate the effect of GLV as a natural fortificant of multiple micronutrients through a prospective human trial.

Why It Was Studied

Green leafy vegetables (GLV) are rich sources of beta-carotene, iron and other micronutrients.

Moreover linkages of GLV intakes with plasma retinol and ascorbic acid were seen in apparently healthy Indians.

Who Took Part

According to the abstract, 4 volunteers were involved.

PubMed indexes the participants as teenagers and adults, both men and women.

How the Study Was Run

In design terms this was 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.

Hemoglobin (Hb), plasma beta-carotene, zinc, vitamin C, glucose, and triglycerides were measured.

What Was Measured

Topics PubMed links to this paper include Antioxidants, Ascorbic Acid, Biological Availability, Blood Glucose, Dietary Fats, Unsaturated, Dietary Supplements and Hemoglobins.

What This Means in Plain Language

The paper is a randomized study of Vitamin D, K2, Magnesium and Zinc in 4 volunteers.

With fewer than 40 people, it is a small study, so it is better read as an early signal for further research than as a settled answer.

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 2006 (European journal of nutrition), a journal based in Germany.

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