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Green tea drinking habits and esophageal cancer in southern China: a case-control study.
Asian Pac J Cancer Prev. 2011; 12(1):229-33.AP

Abstract

AIM

To investigate effects of green tea drinking and its temperature on esophageal cancer development.

METHODS

A 1:2 matched hospital-based case-control study including 150 cases and 300 controls was conducted in southern area of China from June 2004 to May 2010. A self-designed questionnaire was used to collect information on possible risk factors of esophageal cancer, and to assess the tea drinking habit and temperature. Conditional logistic regression was used to calculate odds ratios (ORs) and corresponding 95% confidence intervals (CIs).

RESULTS

We find a significant protective effect of high consumption of green tea on esophageal cancer with low temperature tea (OR=0.79, 95%CI=0.29-0.97). However, drinking tea at a temperature of 70-79° and above 80° was related to greatly elevated risk of esophageal cancer with ORs of 2.21 (1.57-5.53) and 4.74 (2.67-10.51). An agreement was found between reported tea temperature and measured temperature (correlation coefficient =0.62). Further analysis indicated hot tea temperature to be associated with heavy risk of esophageal cancer in former and current smokers and current drinkers (former and current smokers: OR=8.91(1.91-16.77) and 7.33(2.23-12.46), respectively; former and current drinkers: OR=7.58(0.83-9.53) and 6.93(2.01-10.65)).

CONCLUSION

In the South China context, drinking tea at high temperature significantly increases risk of esophageal cancer, especially in drinkers and smokers.

Authors+Show Affiliations

School of Public Health and Tropical Medicine, Southern Medical University, China. chenzuhui0808@126.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21517263

Citation

Chen, Zuhui, et al. "Green Tea Drinking Habits and Esophageal Cancer in Southern China: a Case-control Study." Asian Pacific Journal of Cancer Prevention : APJCP, vol. 12, no. 1, 2011, pp. 229-33.
Chen Z, Chen Q, Xia H, et al. Green tea drinking habits and esophageal cancer in southern China: a case-control study. Asian Pac J Cancer Prev. 2011;12(1):229-33.
Chen, Z., Chen, Q., Xia, H., & Lin, J. (2011). Green tea drinking habits and esophageal cancer in southern China: a case-control study. Asian Pacific Journal of Cancer Prevention : APJCP, 12(1), 229-33.
Chen Z, et al. Green Tea Drinking Habits and Esophageal Cancer in Southern China: a Case-control Study. Asian Pac J Cancer Prev. 2011;12(1):229-33. PubMed PMID: 21517263.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Green tea drinking habits and esophageal cancer in southern China: a case-control study. AU - Chen,Zuhui, AU - Chen,Qing, AU - Xia,Haiyan, AU - Lin,Jinrong, PY - 2011/4/27/entrez PY - 2011/4/27/pubmed PY - 2012/5/31/medline SP - 229 EP - 33 JF - Asian Pacific journal of cancer prevention : APJCP JO - Asian Pac J Cancer Prev VL - 12 IS - 1 N2 - AIM: To investigate effects of green tea drinking and its temperature on esophageal cancer development. METHODS: A 1:2 matched hospital-based case-control study including 150 cases and 300 controls was conducted in southern area of China from June 2004 to May 2010. A self-designed questionnaire was used to collect information on possible risk factors of esophageal cancer, and to assess the tea drinking habit and temperature. Conditional logistic regression was used to calculate odds ratios (ORs) and corresponding 95% confidence intervals (CIs). RESULTS: We find a significant protective effect of high consumption of green tea on esophageal cancer with low temperature tea (OR=0.79, 95%CI=0.29-0.97). However, drinking tea at a temperature of 70-79° and above 80° was related to greatly elevated risk of esophageal cancer with ORs of 2.21 (1.57-5.53) and 4.74 (2.67-10.51). An agreement was found between reported tea temperature and measured temperature (correlation coefficient =0.62). Further analysis indicated hot tea temperature to be associated with heavy risk of esophageal cancer in former and current smokers and current drinkers (former and current smokers: OR=8.91(1.91-16.77) and 7.33(2.23-12.46), respectively; former and current drinkers: OR=7.58(0.83-9.53) and 6.93(2.01-10.65)). CONCLUSION: In the South China context, drinking tea at high temperature significantly increases risk of esophageal cancer, especially in drinkers and smokers. SN - 2476-762X UR - https://www.unboundmedicine.com/medline/citation/21517263/Green_tea_drinking_habits_and_esophageal_cancer_in_southern_China:_a_case_control_study_ L2 - http://journal.waocp.org/?sid=Entrez:PubMed&id=pmid:21517263&key=2011.12.1.229 DB - PRIME DP - Unbound Medicine ER -