A meta-analysis of alcohol consumption and thyroid cancer risk

Xiaofei Wang; Wenli Cheng; Jingdong Li; Jingqiang Zhu

doi:10.18632/oncotarget.10352

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A meta-analysis of alcohol consumption and thyroid cancer risk

Xiaofei Wang, Wenli Cheng, Jingdong Li and Jingqiang Zhu _

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Oncotarget. 2016; 7:55912-55923. https://doi.org/10.18632/oncotarget.10352

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Abstract

Xiaofei Wang1,2, Wenli Cheng3, Jingdong Li2 and Jingqiang Zhu1

1 Department of Thyroid and Breast Surgery, West China Hospital, Sichuan University, Chengdu, China

2 Department of General Surgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China

3 Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China

Correspondence to:

Jingqiang Zhu, email:

Keywords: thyroid cancer; alcohol consumption; epidemiology; meta-analysis

Received: April 03, 2016 Accepted: June 09, 2016 Published: June 30, 2016

Abstract

Background: It is still inconclusive whether alcohol consumption affects the risk of thyroid cancer. We conducted a meta-analysis of available epidemiological data to address this issue.

Results: Compared with nondrinkers, the pooled relative risks (RRs) and corresponding 95% confidential intervals (CIs) of thyroid cancer were 0.80 (95% CI 0.71-0.90) for any drinkers, 0.81 (95% CI 0.70-0.93) for light and 0.71 (95% CI 0.63-0.79) for moderate drinkers. The dose–response analysis suggested that there is no evidence of a dose-risk relationship between alcohol intaking and thyroid cancer risk (P = 0.112).

Methods: Eligible studies were identified by searching PubMed and EMbase databases. A total of 24 studies, included 9,990 cases with thyroid cancer, were included in this meta-analysis. We defined light alcohol intake as ≤ one drink/day and moderate as >one drink/day. The summary risk estimates were calculated by the random effects model. A dose-response analysis was also conducted for modeling the dose-risk relation.

Conclusion: This meta-analysis confirmed an inverse association between alcohol consumption and thyroid cancer risk. Further studies are needed to better understand the potential mechanisms underlying this association.

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A meta-analysis of alcohol consumption and thyroid cancer risk

Abstract