Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/89735
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Type: Journal article
Title: Tea consumption is inversely related to 5-year blood pressure change among adults in Jiangsu, China: a cross-sectional study
Author: Tong, X.
Taylor, A.
Giles, L.
Wittert, G.
Shi, Z.
Citation: Nutrition Journal, 2014; 13(1):98-1-98-12
Publisher: BioMed Central
Issue Date: 2014
ISSN: 1475-2891
1475-2891
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Responsibility: 
Xiaoliang Tong, Anne W Taylor, Lynne Giles, Gary A Wittert and Zumin Shi
Abstract: BACKGROUND: Data relating to the association between tea consumption and blood pressure change are inconsistent. The aim of this analysis was to investigate the association between tea consumption and the change in blood pressure (BP) in Chinese adults over a 5-year period. METHODS: Data from 1109 Chinese men (N= 472) and women (N= 637) who participated in the Jiangsu Nutrition Study (JIN) were analysed. BP was measured in 2002 and 2007. Tea (green, black and total tea) consumption was quantitatively assessed at the follow-up survey in 2007. RESULTS: Total tea and green tea consumption were inversely associated with 5-year diastolic BP (DBP) but not systolic BP (SBP) change. In the multivariable analysis, compared with no consumption of tea, those with daily total tea/green tea consumption of at least10 g had 2.41 mmHg and 3.68 mmHg smaller increase of DBP respectively. There was a significant interaction between smoking and total tea/green tea consumption and DBP change. The inverse association between total tea/green tea consumption and DBP change was significant only in non-smokers. Green tea consumption was inversely associated with SBP change only in non-smokers and those without central obesity. CONCLUSION: The consumption of green tea is inversely associated with 5-year BP change among Chinese adults, an effect abrogated by smoking.
Keywords: Blood pressure change; Tea consumption; Epidemiology; Nutrition; Population study
Rights: © 2014 Tong et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
DOI: 10.1186/1475-2891-13-98
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