Coffee and cancers of the upper digestive and respiratory tracts: Meta-analyses of observational studies

F. Turati, C. Galeone, C. La Vecchia, W. Garavello, A. Tavani

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Data of epidemiological studies on the relation between coffee drinking and upper aerodigestive tract cancer risk are scattered and inconclusive. We therefore conducted systematic meta-analyses of observational studies published before October 2009. Materials and methods: We combined relative risks (RR) with 95% confidence intervals (CI) for cancers of the oral cavity/pharynx (OP) and larynx, esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC), comparing the highest versus the lowest categories of coffee consumption, using random-effects models. Results: For OP cancer, the pooled RR was 0.64 (95% CI 0.51-0.80) for highest versus lowest coffee drinking, based on a total of 2633 cases from one cohort and eight case-control studies, with no significant heterogeneity across studies. The RRs were 0.61 (95% CI 0.41-0.89) for European, 0.58 (95% CI 0.36-0.94) for American and 0.74 (95% CI 0.48-1.15) for Asian studies, where coffee consumption is lower. The corresponding RRs were 1.56 (95% CI 0.60-4.02) for laryngeal cancer (732 cases from three case-control studies), 0.87 (95% CI 0.65-1.17) for ESCC (2115 cases from one cohort and six case-control studies) and 1.18 (95% CI 0.81-1.71) for EAC (415 cases from three case-control studies). Conclusion: Coffee drinking is inversely related to OP cancer risk, while there is no relation with laryngeal cancer, ESCC and EAC.

Original languageEnglish
Pages (from-to)536-544
Number of pages9
JournalAnnals of Oncology
Volume22
Issue number3
DOIs
Publication statusPublished - Mar 2011

Keywords

  • Coffee
  • Esophageal cancer
  • Laryngeal cancer
  • Meta-analysis
  • Oral cancer
  • Pharyngeal cancer

ASJC Scopus subject areas

  • Oncology
  • Hematology

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