World-wide research architecture of vitamin D research : density-equalizing mapping studies and socio-economic analysis

  • Background: Despite the numerous associations of vitamin D with health and disease, vitamin D deficiency is still common from a global perspective. While basic research, clinical and preventive activities grow constantly in vitamin D research, there is no in-depth analysis of the related global scientific productivity available so far. Methods: Density equalizing mapping procedures (DEMP) were combined with socioeconomic benchmarks using the NewQIS platform. Results: A total of 25,992 vitamin D-related research articles were identified between 1900 to 2014 with a significant increase (r2 = .6541) from 1900 to 2014. Authors located in Northern America – especially in the USA – distributed the majority of global vitamin D research, followed by their Western European counterparts. DEMP-analysis illustrates that Africa and South America exhibit only minor scientific productivity. Among high-income group countries, Scandinavian nations such as Denmark or Finland (2147.9 and 1607.7 vitamin D articles per GDP in 1000 billion USD) were highly active with regard to socioeconomic figures. Conclusion: Networks dedicated to vitamin D research are present around the world. Overall, the Northern American and Western European nations occupy prominent positions. However, South American, African and Asian countries apart from Japan only play a minor role in the global research production related to vitamin D. Since vitamin D deficiency is currently increasing in the Americas, Europe and parts of the Middle East, research in these regions may need to be encouraged.

Download full text files

Export metadata

Author:Dörthe BrüggmannORCiDGND, Annahita Alafi, Jenny Jaque, Doris KlingelhöferORCiD, Michael Hans Karl Bendels, Daniela Maren OhlendorfORCiDGND, David QuarcooORCiDGND, Frank LouwenGND, Sue A. Ingles, Eileen M. WankeORCiDGND, Jan David Alexander GronebergORCiDGND
Pubmed Id:
Parent Title (English):Nutrition journal
Publisher:BioMed Central
Place of publication:London
Document Type:Article
Year of Completion:2018
Date of first Publication:2018/01/06
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2018/01/16
Tag:Density equalizing mapping; Research architecture; Vitamin D
Issue:1, Art. 3
Page Number:12
First Page:1
Last Page:12
© The Author(s). 2018 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.
Institutes:Psychologie und Sportwissenschaften / Sportwissenschaften
Medizin / Medizin
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung 4.0