The effect of vitamin D on sleep quality: A systematic review and meta-analysis

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#humans #vitamin-d #quality-of-life #sleep-quality #vitamins

The effect of vitamin D on sleep quality: A systematic review and meta-analysis

Mirzaei-Azandaryani et al., 2022 | Nutr Health | Meta Analysis

Citation

Mirzaei-Azandaryani Zahra, Abdolalipour Somyieh, Mirghafourvand Mojgan. The effect of vitamin D on sleep quality: A systematic review and meta-analysis. Nutr Health. 2022-Dec;28(4):515-526. doi:10.1177/02601060221082367

Abstract

Background: Poor sleep quality is a common problem in the general population that affects the quality of life of individuals. Aim: This systematic review aimed to determine the effect of vitamin D on sleep quality (primary outcome) and side effects (secondary outcome). Methods: A systematic search was performed using Cochrane Library, PubMed, Embase, Web of Sciences, Scopus, Google Scholar, SID, and Magiran databases with no limit at the time of publication. Cochrane collaboration instrument was used to evaluate the quality of the included studies. RevMan software was used for meta-analysis. Mean Difference was calculated due to the same sleep quality measurement tools in all studies. Heterogeneity of studies was assessed using I-squared (I2). Due to high heterogeneity (I2 > 75%), Random Effect was used instead of Fixed Effect. Results: Out of a total of 1637 titles and abstracts found, after removing duplicate items (23 items), 1596 items were removed due to irrelevance and lack of inclusion criteria. 18 articles were fully studied due to insufficient abstract information and finally, 5 articles were entered into systematic review and meta-analysis. The results of the meta-analysis showed that the use of vitamin D supplementation significantly improves sleep quality (MD: -1.32; 95%CI: -2.55 to -0.09; P = 0.04). Conclusions: Also, according to the findings of this study, receiving vitamin D supplementation did not cause any side effects. According to the results of this review study, sleep quality in people receiving vitamin D significantly improved compared to the control group.

Key Findings

Out of a total of 1637 titles and abstracts found, after removing duplicate items (23 items), 1596 items were removed due to irrelevance and lack of inclusion criteria. 18 articles were fully studied due to insufficient abstract information and finally, 5 articles were entered into systematic review and meta-analysis. The results of the meta-analysis showed that the use of vitamin D supplementation significantly improves sleep quality (MD: -1.32; 95%CI: -2.55 to -0.09; P = 0.04). Conclusions: Al

Outcomes Measured

  • sleep quality

Population

Field Value
Population See abstract
Sample Size See abstract
Age Range See abstract
Condition sleep

MeSH Terms

  • Humans
  • Vitamin D
  • Quality of Life
  • Sleep Quality
  • Vitamins

Evidence Classification

  • Level: Meta Analysis
  • Publication Types: Meta-Analysis, Systematic Review, Journal Article
  • Vertical: vitamin-d-sleep

Provenance

Source extracted via PubMed E-utilities API on 2026-04-09