Vitamin D-containing supplementation and depressive symptom severity in adults: A Bayesian systematic review and evidence-structure assessment.
Guangru Xu, Tiantian Hu, Chuanxia Zhang et al.
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In 30 seconds
This systematic review and network meta-analysis evaluated the impact of vitamin D-containing supplementation on depressive symptom severity in adults. Thirteen randomized studies were included, revealing that vitamin D supplementation was associated with lower depressive symptom severity compared to comparators, with a posterior median standardized mean difference of -0.88 (95% credible interval, -1.38 to -0.35).
Key findings
- Vitamin D supplementation was linked to a posterior median SMD of -0.88 for depressive symptoms.
- Substantial between-study heterogeneity was observed, with predictive intervals crossing the null.
- The treatment network was fragmented, limiting formal network meta-analysis.
- Cautious pairwise synthesis is supported, but not clinical treatment ranking.
Why it matters
Understanding the role of vitamin D in managing depressive symptoms can inform treatment strategies. However, the heterogeneity of results highlights the need for further research to clarify its effectiveness and optimal use in clinical practice.
What to keep in mind
The treatment network was fragmented, and co-nutrient variation was sparse, limiting the robustness of network meta-analysis.