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Cited by 40

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Association between green tea/coffee consumption and biliary tract cancer: A population‐based cohort study in Japan

Makiuchi, Takeshi, Sobue, Tomotaka, Kitamura, Tetsuhisa, Ishihara, Junko, Sawada, Norie, Iwasaki, Motoki, Sasazuki, Shizuka, Yamaji, Taiki, Shimazu, Taichi, Tsugane, Shoichiro·2016·Cancer Science
DOI 10.1111/cas.12843
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Abstract

Green tea and coffee consumption may decrease the risk of some types of cancers. However, their effects on biliary tract cancer ( BTC ) have been poorly understood. In this population‐based prospective cohort study in Japan, we investigated the association of green tea (total green tea, Sencha, and Bancha/Genmaicha ) and coffee consumption with the risk for BTC and its subtypes, gallbladder cancer, and extrahepatic bile duct cancer. The hazard ratios and 95% confidence intervals were calculated using the Cox proportional hazard model. A total of 89 555 people aged 45–74 years were enrolled between 1995 and 1999 and followed up for 1 138 623 person‐years until 2010, during which 284 cases of BTC were identified. Consumption of >720 mL/day green tea was significantly associated with decreased risk compared with consumption of ≤120 mL/day (hazard ratio = 0.67 [95% confidence interval, 0.46–0.97]), and a non‐significant trend of decreased risk associated with increased consumption was observed ( P ‐trend = 0.095). In the analysis according to the location of the primary tumor, consuming >120 mL green tea tended to be associated with decreased risk of gallbladder cancer and extrahepatic bile duct cancer. When Sencha and Bancha/Genmaicha were analyzed separately, we observed a non‐significant trend of decreased risk of BTC associated with Sencha but no association with Bancha/Genmaicha . For coffee, there was no clear association with biliary tract, gallbladder, or extrahepatic bile duct cancer. Our findings suggest that high green tea consumption may lower the risk of BTC , and the effect may be attributable to Sencha consumption.

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Metadata

Authors
Makiuchi, T., Sobue, T., Kitamura, T., Ishihara, J., Sawada, N., Iwasaki, M., Sasazuki, S., Yamaji, T., Shimazu, T., & Tsugane, S.
Affiliations
  • Department of Environmental Medicine and Population Sciences, Graduate School of Medicine Osaka University Suita Japan
  • Graduate School of Nutrition Science Sagami Women's University Sagamihara Japan
  • Epidemiology and Prevention Group, Research Center for Cancer Prevention and Screening National Cancer Center Tokyo Japan
Venue
Cancer Science
Publisher
Wiley
Published
2016-01
Volume
107
Issue
1
Pages
76-83
ISSN
  • 1347-9032
  • 1349-7006
DOI
10.1111/cas.12843
Cited by
40
References
3
Language
en
Licence
Funders
Ministry of Health, Labour and Welfare

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CoChat. (2026). Citation check: Association between green tea/coffee consumption and biliary tract cancer: A population‐based cohort study in Japan. https://app.cochat.ai/papers/10.1111/cas.12843
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Makiuchi, T., Sobue, T., Kitamura, T., Ishihara, J., Sawada, N., Iwasaki, M., Sasazuki, S., Yamaji, T., Shimazu, T., & Tsugane, S. (2016). Association between green tea/coffee consumption and biliary tract cancer: A population‐based cohort study in Japan. Cancer Science. https://doi.org/10.1111/cas.12843

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.