TY  - JOUR
PY  - 2015//
TI  - Tea consumption and the risk of depression: a meta-analysis of observational studies
JO  - Australian and New Zealand journal of psychiatry
A1  - Dong, Xiaoxin
A1  - Yang, Chen
A1  - Cao, Shiyi
A1  - Gan, Yong
A1  - Sun, Huilian
A1  - Gong, Yanhong
A1  - Yang, Huajie
A1  - Yin, Xiaoxu
A1  - Lu, Zuxun
SP  - 334
EP  - 345
VL  - 49
IS  - 4
N2  - OBJECTIVE: Whether tea consumption decreases the risk of depression remains controversial. We performed a meta-analysis of findings from observational studies to evaluate the association between tea consumption and depression risk. <br><br>METHOD: Embase, PubMed, and Chinese National Knowledge Infrastructure databases were searched from their inception through August 2014 for observational studies that had reported the association between tea consumption and depression risk. We used a fixed effects model when heterogeneity was negligible and a random effect model when heterogeneity was significant to calculate the summary relative risk estimates (RRs) and 95% confidence intervals (CIs). <br><br>RESULTS: Eleven studies with 13 reports were eligible for inclusion in the meta-analysis (22,817 participants with 4,743 cases of depression). Compared to individuals with lower tea consumption, those with higher tea consumption had a pooled RR of depression risk at 0.69 (95% CI: 0.63-0.75). Eight reports were included in the dose-response analysis of tea consumption and depression risk (10,600 participants with 2,107 cases). There was a linear association between tea consumption and the risk of depression, with an increment of 3 cups/day in tea consumption associated with a decrease in the risk of depression of 37% (RR = 0.63, 95% CI: 0.55-0.71). <br><br>CONCLUSION: Tea consumption is associated with a decreased risk of depression.<p />  <p>Language: en</p>
LA  - en
SN  - 0004-8674
UR  - http://dx.doi.org/10.1177/0004867414567759
ID  - ref1
ER  -