Green tea consumption is associated with lower psychological distress in a general population: the Ohsaki Cohort 2006 Study
Green tea consumption is associated with lower psychological distress in a general population: the Ohsaki Cohort 2006 Study
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DOI:
10.3945/ajcn.2009.28214
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发表时间:
2009-11-01
影响因子:
7.1
通讯作者:
Tsuji, Ichiro
中科院分区:
文献类型:
--
作者:
Hozawa, Atsushi;Kuriyama, Shinichi;Tsuji, Ichiro
Background: Although green tea or its constituents might reduce psychological stress, the relation between green tea consumption and psychological distress has not been investigated in a large-scale study.Objective: Our aim was to clarify whether green tea consumption is associated with lower psychological distress.Design: We analyzed cross-sectional data for 42,093 Japanese individuals aged >= 40 y from the general population. Information on daily green tea consumption, psychological distress as assessed by the Kessler 6-item psychological distress scale, and other lifestyle factors was collected by using a questionnaire. We used multiple logistic regression analyses adjusted for age, sex, history of disease, body mass index, cigarette smoking, alcohol consumption, time spent walking, dietary factors, social support, and participation in community activities to investigate the relation between green tea consumption and psychological distress.Results: We classified 2774 (6.6%) of the respondents as having psychological distress ( Kessler 6-item psychological distress scale >= 13/24). There was an inverse association between green tea consumption and psychological distress in a model adjusted for age and sex. Although the relation was largely attenuated when possible confounding factors were adjusted for, a statistically significant inverse association remained. The odds ratio ( with 95% CI) of developing psychological distress among respondents who consumed >= 5 cups of green tea/d was 0.80 (0.70, 0.91) compared with those who consumed