meta_analysis
2023
High Quality
Efficacy of vitamin D3 supplementation on cancer mortality: systematic review and individual patient data meta-analysis of randomised controlled trials
Kuznia S, et al
Published in Ageing Res Rev
Key Findings
Vitamin D3 reduced cancer mortality by a non-significant 6% overall; daily (not bolus) dosing reduced cancer mortality by 12%.
Conclusions
Benefit on cancer mortality is confined to daily dosing regimens and remains modest.
Limitations
Subgroup finding; IPD unavailable for all trials.
Supplements Studied
Vitamin D
Vitamin
A subgroup analysis revealed that vitamin D3 administered daily, in contrast to bolus supplementation, reduced cancer mortality by 12%.
Outcomes Measured
Vitamin D3 did not reduce cancer mortality in the main meta-analysis of all RCTs because the observed risk reduction by 6 % was not statistically significant.
Related Health Concerns
Study Details
Year:2023
Quality Score:9/10
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.