Relationship between abdominal obesity (based on waist circumference) and serum vitamin D levels: a systematic review and meta-analysis of epidemiologic studies.

What It Covers

Researchers studied Vitamin D, K2, Magnesium and Zinc in this meta-analysis publication.

A systematic review and meta-analysis was performed to evaluate the effect of abdominal obesity (based on WC) on vitamin D deficiency or insufficiency in adults.

Why It Was Studied

Although previous observational studies have investigated the association between waist circumference (WC) values and serum vitamin D levels, findings have been inconsistent.

A systematic search of the published literature up to September 2020 was conducted in electronic databases, including MEDLINE (PubMed), EMBASE, Institute for Scientific Information (ISI) (Web of Science), Scopus, and Google Scholar, for observational studies that investigated the association between abdominal obesity (based on WC) or different categories of WC as the exposure and serum 25-hydroxy vitamin D levels as the outcome.

Who the Included Studies Covered

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

How the Review Was Done

Eighteen cross-sectional studies were included in the review.

The relationship between WC values and combined serum vitamin D deficiency and insufficiency (<30 ng/mL) or vitamin D deficiency (<20 ng/mL) was evaluated.

What Was Measured

Although previous observational studies have investigated the association between waist circumference (WC) values and serum vitamin D levels, findings have been inconsistent.

A systematic search of the published literature up to September 2020 was conducted in electronic databases, including MEDLINE (PubMed), EMBASE, Institute for Scientific Information (ISI) (Web of Science), Scopus, and Google Scholar, for observational studies that investigated the association between abdominal obesity (based on WC) or different categories of WC as the exposure and serum 25-hydroxy vitamin D levels as the outcome.

PubMed files the paper under topics including Cross-Sectional Studies, Obesity, Obesity, Abdominal, Vitamin D, Vitamin D Deficiency and Waist Circumference.

Author keywords: abdominal obesity, meta-analysis, systematic review and vitamin D insufficiency.

What This Means in Plain Language

This is a meta-analysis of Vitamin D, K2, Magnesium and Zinc.

Results are reported in around 2 sentences of the abstract; we leave them to the paper itself rather than summarise them.

The publication is from 2022 (Nutrition reviews), a journal based in United States.

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