Vitamin D linked to survival during cancer immunotherapy, without proof of supplementation benefit
A research synthesis found favorable associations with vitamin D status and supplement use, but the authors say more evidence is needed before treatment recommendations.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Higher blood vitamin D concentrations were associated with better overall survival and other treatment outcomes among patients receiving cancer immunotherapy. Supplement use was also associated with longer overall survival. These findings do not establish that taking vitamin D improves survival, and the limited range of cancers restricts how broadly the results can be applied.
This abstract-based account cannot assess study-level confounding or vitamin D thresholds. The authors highlight limited cancer categories and call for stronger evidence across cancers and treatment regimens before using supplementation to improve prognosis.
Blood concentration and supplementation differ
The review examined both measured vitamin D concentrations and supplement use. Associations involving a blood measurement do not establish what would happen if that measurement were changed through supplementation, even when both analyses appear favorable.
The treatment context matters
Patients with solid tumors in the included studies received immune checkpoint inhibitors, while the lymphoma analysis covered immunotherapy more broadly. The results therefore concern particular cancer treatment settings and cannot be generalized to everyone taking vitamin D.
The original publication
Higher serum vitamin D concentration and supplementation were associated with improved survival outcomes and treatment response in cancer patients receiving immunotherapy: A systematic review and meta-analysis.
Yang Q, Shu C, Li H et al.
Nutr Res · 2025
- PubMed ID
- 40885140
- Record checked
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