Evidence map›Paper›PMID 34860171›Full record

ReviewEndocrine connections2022

Global differences in vitamin D status and dietary intake: a review of the data.

Kevin D Cashman

Registry-linked trialAbstract readReview
PubMed Full text at PMC Publisher
In one paragraph

Review in Endocrine connections, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06289257 (Analysis of Vitamin D and VDR Expression in Women With Advanced Endometriosis), which is not on this map. Cited by 78 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 6 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06289257 completednot on this mapstarted 2024, after this paper: background citation

Analysis of Vitamin D and VDR Expression in Women With Advanced Endometriosis: A Case-Control Study in Thailand

Typeobservational_patient_registrySponsorKhon Kaen UniversityRan2024 to 2024Enrolled108ConditionsEndometriosis, Vitamin D Deficiency/Insufficiency, Vitamin D StatusArmsVitamin D level, Vitamin D receptor
3 · Its place in the literature

Who cites it

78 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
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  5. Efficacy of vitamin DAgeing research reviews · 2023
    Pooled it
  6. Pooled it
  7. Effect of calcifediol and cholecalciferol on muscle function in postmenopausal women: a randomized controlled trial.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2025
    Trial
  8. The effect of vitamin DDiabetologia · 2025
    Trial
  9. Effect of vitamin DJournal of the International Society of Sports Nutrition · 2023
    Trial
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18 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author.

Kevin D CashmanCork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Internationally, concern has been repeatedly raised about the little notable progress in the collection, analysis and use of population micronutrient status and deficiency data globally. The need for representative status and intake data for vitamin D has been highlighted as a research priority for well over a decade. Aim and methods: A narrative review which aims to provide a summary and assessment of vitamin D nutritional status data globally. This review divides the world into the Food and Agriculture Organisation's (FAO) major regions: the Americas, Europe, Oceania, Africa and Asia. Emphasis was placed on published data on the prevalence of serum 25-hydroxyvitamin D (25(OH)D) < 25/30 and <50 nmol/L (reflecting vitamin D deficiency and inadequacy, respectively) as well as vitamin D intake, where possible from nationally representative surveys. Results: Collating data from the limited number of available representative surveys from individual countries might suggest a relatively low overall prevalence of vitamin D deficiency in South America, Oceania and North America, whereas there is more moderate prevalence in Europe and Asia, and possibly Africa. Overall, the prevalence of serum 25(OH)D < 25/30 and <50 nmol/L ranges from ~5 to 18% and 24 to 49%, respectively, depending on FAO world region. Usual intakes of vitamin D can also vary by FAO world region, but in general, with a few exceptions, there are very high levels of inadequacy of vitamin D intake. Conclusions: While the burden of vitamin D deficiency and inadequacy varies by world regions and not just by UVB availability, the global burden overall translates into enormous numbers of individuals at risk.

Indexed as

national surveysserum 25(OH)Dusual vitamin D intakevitamin D status

Identifiers

PMID34860171
PMCPMC8789021

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.