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Green tea consumption is inversely associated with the incidence of influenza infection among schoolchildren in a tea plantation area of Japan.
J Nutr. 2011 Oct; 141(10):1862-70.JN

Abstract

Green tea is known to contain antiviral components that prevent influenza infection. A limited number of adult clinical studies have been undertaken, but there is a paucity of clinical evidence concerning children. We conducted an observational study to determine the association between green tea consumption and the incidence of influenza infection among schoolchildren. Anonymous questionnaire surveys were undertaken twice during the influenza season from November 2008 to February 2009 (endemic seasonal type A influenza infection); each survey was conducted for 2663 pupils across all elementary schools in Kikugawa City (a tea plantation area), Japan. Each questionnaire was completed and submitted by 2050 pupils (response rate, 77.0%; age range, 6-13 y). The adjusted OR associated with the consumption of green tea for ≥6 d/wk compared with <3 d/wk was 0.60 [(95% CI = 0.39-0.92); P = 0.02] in cases of influenza confirmed by the antigen test. Meanwhile, the adjusted OR inversely associated with the consumption of 1 cup/d to <3 cups/d (1 cup = 200 mL) and 3-5 cups/d compared with <1 cup/d were 0.62 [(95% CI = 0.41-0.95); P = 0.03] and 0.54 [(95% CI = 0.30-0.94); P = 0.03], respectively. However, there was no significant association with the consumption of >5 cups/d. Our findings thus suggest that the consumption of 1-5 cups/d of green tea may prevent influenza infection in children.

Authors+Show Affiliations

Department of Drug Evaluation and Informatics, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

21832025

Citation

Park, Mijong, et al. "Green Tea Consumption Is Inversely Associated With the Incidence of Influenza Infection Among Schoolchildren in a Tea Plantation Area of Japan." The Journal of Nutrition, vol. 141, no. 10, 2011, pp. 1862-70.
Park M, Yamada H, Matsushita K, et al. Green tea consumption is inversely associated with the incidence of influenza infection among schoolchildren in a tea plantation area of Japan. J Nutr. 2011;141(10):1862-70.
Park, M., Yamada, H., Matsushita, K., Kaji, S., Goto, T., Okada, Y., Kosuge, K., & Kitagawa, T. (2011). Green tea consumption is inversely associated with the incidence of influenza infection among schoolchildren in a tea plantation area of Japan. The Journal of Nutrition, 141(10), 1862-70. https://doi.org/10.3945/jn.110.137547
Park M, et al. Green Tea Consumption Is Inversely Associated With the Incidence of Influenza Infection Among Schoolchildren in a Tea Plantation Area of Japan. J Nutr. 2011;141(10):1862-70. PubMed PMID: 21832025.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Green tea consumption is inversely associated with the incidence of influenza infection among schoolchildren in a tea plantation area of Japan. AU - Park,Mijong, AU - Yamada,Hiroshi, AU - Matsushita,Kumi, AU - Kaji,Shinya, AU - Goto,Takahiro, AU - Okada,Yuko, AU - Kosuge,Kazuhiro, AU - Kitagawa,Toshiro, Y1 - 2011/08/10/ PY - 2011/8/12/entrez PY - 2011/8/13/pubmed PY - 2011/12/13/medline SP - 1862 EP - 70 JF - The Journal of nutrition JO - J Nutr VL - 141 IS - 10 N2 - Green tea is known to contain antiviral components that prevent influenza infection. A limited number of adult clinical studies have been undertaken, but there is a paucity of clinical evidence concerning children. We conducted an observational study to determine the association between green tea consumption and the incidence of influenza infection among schoolchildren. Anonymous questionnaire surveys were undertaken twice during the influenza season from November 2008 to February 2009 (endemic seasonal type A influenza infection); each survey was conducted for 2663 pupils across all elementary schools in Kikugawa City (a tea plantation area), Japan. Each questionnaire was completed and submitted by 2050 pupils (response rate, 77.0%; age range, 6-13 y). The adjusted OR associated with the consumption of green tea for ≥6 d/wk compared with <3 d/wk was 0.60 [(95% CI = 0.39-0.92); P = 0.02] in cases of influenza confirmed by the antigen test. Meanwhile, the adjusted OR inversely associated with the consumption of 1 cup/d to <3 cups/d (1 cup = 200 mL) and 3-5 cups/d compared with <1 cup/d were 0.62 [(95% CI = 0.41-0.95); P = 0.03] and 0.54 [(95% CI = 0.30-0.94); P = 0.03], respectively. However, there was no significant association with the consumption of >5 cups/d. Our findings thus suggest that the consumption of 1-5 cups/d of green tea may prevent influenza infection in children. SN - 1541-6100 UR - https://www.unboundmedicine.com/medline/citation/21832025/full_citation L2 - https://academic.oup.com/jn/article-lookup/doi/10.3945/jn.110.137547 DB - PRIME DP - Unbound Medicine ER -