Prevention and management of gestational diabetes using vitamin d supplementation: An overview and appraisal of clinical trials

Research output: Contribution to journalReview ArticleResearchpeer-review

1 Citation (Scopus)


A number of studies have examined the role of vitamin D in reproductive processes and disorders of pregnancy such as gestational diabetes mellitus (GDM). Although observational studies have linked maternal vitamin D deficiency with a plethora of adverse pregnancy outcomes including GDM, intervention trials generally do not support the use of vitamin D supplementation for GDM prevention or management. This narrative review provides an up-to-date overview and critical appraisal of randomised controlled trials (RCTs) to describe the current state of knowledge regarding the efficacy of vitamin D supplementation for preventing and/or managing GDM. Overall, although RCT data indicates a potential benefit of vitamin D in maternal glycaemic control, results are highly disparate and the data published to date have not conclusively established the efficacy of vitamin D in GDM prevention. There are, however, several limitations within the existing literature, including some considerable challenges that are unique to vitamin D trials, which should be carefully considered in the interpretation of the evidence and design of future studies. For now, many unanswered questions remain, and there is still a need for adequately powered and well-designed trials before routine supplementation can be recommended in the context of GDM.

Original languageEnglish
Article number8141
Number of pages19
JournalApplied Sciences
Issue number22
Publication statusPublished - 2 Nov 2020


  • 25(OH)D
  • Critical appraisal
  • GDM
  • Gestational diabetes mellitus
  • Glycaemic control
  • Pregnancy
  • Randomized controlled trials
  • Vitamin D

Cite this