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Effect of dietary antioxidants on the risk of prostate cancer. Systematic review and network meta-analysis

Siyu Liu, Junhui Chen, Yiwen Wang, Yangyang Xu

Prepublicado: 2023-05-03
Publicado: 2023-06-12

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Objective: the purpose of this study was to assess the impact of 14 treatments including a total of 10 dietary antioxidants on the risk of prostate cancer. Material and methods: we searched PubMed, Embase, the Cochrane Library, and the Web of Science for only randomized controlled trials (RCTs) to investigate the effect of these 10 antioxidants on the risk of getting prostate cancer. Using the Cochrane Risk of Bias Assessment Tool, the methodological quality of the included studies was evaluated. Data extraction: studies were appraised by two investigators and data were extracted. Using a surface under cumulative ranking (SUCRA) probability, a Bayesian network meta-analysis was undertaken to evaluate the relative ranking of agents. Results: from the earliest accessible date through August 2022, RCTs were gathered. A total of 14 randomized controlled trials were included with a total sample size of 73,365 males. The results of the network meta-analysis showed that green tea catechins (GTCs) significantly reduced the risk of prostate cancer (SUCRA, 88.6 %) followed by vitamin D (SUCRA, 55.1 %), vitamin B6 (54.1 %), and folic acid was the lowest (22.0 %). Conclusion: based on the Ranking Plot of the Network, we can state that GTCs might have an impact on the prevention of prostate cancer compared to other dietary antioxidants, but we still need quality literature to further prove it.

Palabras Clave: Dietary antioxidants. Prostate cancer. Network meta-analysis. Green tea catechins. Folic acid.

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