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European Journal of Cancer Prevention:
doi: 10.1097/CEJ.0b013e32834dbc11
Review Article: Prostate Cancer

Alcohol consumption and prostate cancer risk: a meta-analysis of the dose–risk relation

Rota, Matteoa,b; Scotti, Lorenzab; Turati, Federicac,d; Tramacere, Irenec; Islami, Farhadf,h,i; Bellocco, Rinob,j; Negri, Evac; Corrao, Giovannib; Boffetta, Paolog,i; La Vecchia, Carloc,d; Bagnardi, Vincenzob,e

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Abstract

Inconsistent results on the relationship between alcohol drinking and prostate cancer have been found. In order to provide a definite quantification of the dose–risk relation, we investigated the risk of prostate cancer at different levels of alcohol consumption, by conducting a meta-analysis of epidemiological studies. We performed a literature search using PubMed of all case–control and cohort studies published as original articles in English up to December 2010. We identified 50 case–control and 22 cohort studies, including a total of 52 899 prostate cancer cases. We derived pooled meta-analytic estimates using random-effects models, taking into account the correlation between estimates. We performed a dose–risk analysis using nonlinear random-effects meta-regression models. The overall relative risk for any alcohol drinking compared with non/occasional drinking was 1.06 [95% confidence interval (CI), 1.01–1.10]. The relative risks were 1.05 (95% CI, 1.02–1.08), 1.06 (95% CI, 1.01–1.11), and 1.08 (95% CI, 0.97–1.20) for light (≤1 drink/day), moderate (>1 to <4 drinks/day), and heavy alcohol drinking (≥4 drinks/day), respectively. This comprehensive meta-analysis provided no evidence of a material association between alcohol drinking and prostate cancer, even at high doses.

© 2012 Lippincott Williams & Wilkins, Inc.

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