Umbrella review demonstrates a link between vitamin D levels and bladder cancer risk, suggesting a need for standardized measurements.
Low serum vitamin D is consistently associated with increased bladder cancer risk, while maintaining levels above 30 nmol/L may provide some protection. Evidence on dietary intake and supplementation remains inconclusive. Future studies should adopt standardized methods for vitamin D measurement, explore the role of free versus total vitamin D, and clarify population-specific differences to better define vitamin D's role in bladder cancer prevention.
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Mancin et al. (2026) studied this question.
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