Green tea consumption and risk of stomach cancer: A meta-analysis of epidemiologic studies

2009 ◽  
Vol 124 (3) ◽  
pp. 670-677 ◽  
Author(s):  
Seung Kwon Myung ◽  
Woo Kyung Bae ◽  
Seung Min Oh ◽  
Yeol Kim ◽  
Woong Ju ◽  
...  
Keyword(s):  
Stomach Cancer ◽  
Green Tea ◽  
Meta Analysis ◽  
Epidemiologic Studies ◽  
Tea Consumption

scholarly journals Green Tea Consumption and Stomach Cancer Risk: A Meta-Analysis

2010 ◽  
Vol 32 ◽  
pp. e2010001 ◽  
Author(s):  
Hyunseok Kang ◽  
Sun Young Rha ◽  
Kyung Won Oh ◽  
Chung Mo Nam
Keyword(s):  
Cancer Risk ◽  
Stomach Cancer ◽  
Green Tea ◽  
Meta Analysis ◽  
Tea Consumption

scholarly journals Anti-Influenza with Green Tea Catechins: A Systematic Review and Meta-Analysis

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4014
Author(s):  
Anchalee Rawangkan ◽  
Kirati Kengkla ◽  
Sukrit Kanchanasurakit ◽  
Acharaporn Duangjai ◽  
Surasak Saokaew
Keyword(s):  
Systematic Review ◽  
Green Tea ◽  
Viral Infections ◽  
Influenza Infection ◽  
Meta Analysis ◽  
Influenza Virus Infection ◽  
Control Group ◽  
Tea Consumption ◽  
Tea Catechins ◽  
Green Tea Catechins

Influenza is one of the most serious respiratory viral infections worldwide. Although several studies have reported that green tea catechins (GTCs) might prevent influenza virus infection, this remains controversial. We performed a systematic review and meta-analysis of eight studies with 5,048 participants that examined the effect of GTC administration on influenza prevention. In a random-effects meta-analysis of five RCTs, 884 participants treated with GTCs showed statistically significant effects on the prevention of influenza infection compared to the control group (risk ratio (RR) 0.67, 95%CIs 0.51–0.89, P = 0.005) without evidence of heterogeneity (I2= 0%, P = 0.629). Similarly, in three cohort studies with 2,223 participants treated with GTCs, there were also statistically significant effects (RR 0.52, 95%CIs 0.35–0.77, P = 0.001) with very low evidence of heterogeneity (I2 = 3%, P = 0.358). Additionally, the overall effect in the subgroup analysis of gargling and orally ingested items (taking capsules and drinking) showed a pooled RR of 0.62 (95% CIs 0.49–0.77, P = 0.003) without heterogeneity (I2= 0%, P = 0.554). There were no obvious publication biases (Egger’s test (P = 0.138) and Begg’s test (P = 0.103)). Our analysis suggests that green tea consumption is effective in the prophylaxis of influenza infections. To confirm the findings before implementation, longitudinal clinical trials with specific doses of green tea consumption are warranted.

scholarly journals Tea Flavonoids and Risk of Cardiovascular and All-Cause Mortality: A Systematic Review and Meta-Analysis

2020 ◽  
Vol 79 (OCE2) ◽  
Author(s):  
Ding Ding Wang ◽  
Aedin Cassidy ◽  
Mario G. Ferruzzi ◽  
Paul Jacques ◽  
Elizabeth Johnson ◽  
...  
Keyword(s):  
Systematic Review ◽  
Cohort Studies ◽  
Green Tea ◽  
Lower Risk ◽  
Meta Analysis ◽  
Black Tea ◽  
Tea Consumption ◽  
Prospective Cohort Studies ◽  
All Cause Mortality ◽  
Meta Regression

AbstractThere is increasing evidence that both black and green tea are beneficial for prevention of cardiovascular disease (CVD). We conducted a systematic review and meta-analysis evaluating the effects of tea flavonoids on cardiovascular (CVD) and all-cause mortality outcomes.Searches across five databases including PubMed and Embase were conducted through November 2018 to identify randomized controlled trials (RCTs) and prospective cohort studies reporting cardiovascular and all-cause mortality outcomes. Two investigators independently conducted abstract and full-text screenings, data extractions, and risk of bias (ROB) assessments using the Nutrition Evidence Library Bias Assessment Tool (NEL BAT). Mixed-effects dose-response meta-regression and standard random-effects meta-analyses for outcomes with ≥ 4 studies were performed. 0 RCTs and 38 prospective cohort studies were included in the systematic review. NEL BAT scores ranged from 0–15 (0 being the lowest risk). Our linear meta-regression model showed that each cup increase in daily tea consumption (about 280 mg and 338 mg of total flavonoids for black and green tea, respectively) was associated with 3–4% lower risk of CVD mortality (predicted adjusted RR = 0.96; CI 0.93–0.99 for green tea and RR = 0.97; CI 0.94–0.99 for black tea). Furthermore, eachcup increase in daily tea consumption was associated a 2% lower risk of all-cause mortality (predicted adjusted relative risk (RR) = 0.98; 95% CI 0.97–0.99 for black tea and RR = 0.98; CI 0.96–0.99 for green tea, respectively). Two studies reported multivariable Cox regression analysis results for the relationship between black tea intake and risks of all-cause mortality outcomes. The results from these two studies were combined with our linear meta-regression result in a random-effects model meta-analysis and showed that each cup increase in daily black tea consumption was associated with an average of 3% lower risk of all-cause mortality (pooled adjusted RR = 0.97; 95% CI 0.87- 1.00) with large heterogeneity (I2 = 81.4%; p = 0.005). Current evidence indicates that increased tea consumption may reduce cardiovascular and all-cause mortality in a dose-response manner. This systematic review was registered on PROSPERO.

scholarly journals Black and green tea consumption and the risk of coronary artery disease: a meta-analysis

2011 ◽  
Vol 93 (3) ◽  
pp. 506-515 ◽  
Author(s):  
Z.-M. Wang ◽  
B. Zhou ◽  
Y.-S. Wang ◽  
Q.-Y. Gong ◽  
Q.-M. Wang ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Green Tea ◽  
Meta Analysis ◽  
Tea Consumption ◽  
Artery Disease

scholarly journals The Effects of Green Tea Consumption on Incidence of Breast Cancer and Recurrence of Breast Cancer: A Systematic Review and Meta-analysis

2005 ◽  
Vol 4 (2) ◽  
pp. 144-155 ◽  
Author(s):  
Dugald Seely ◽  
Edward J. Mills ◽  
Ping Wu ◽  
Shailendra Verma ◽  
Gordon H. Guyatt
Keyword(s):  
Breast Cancer ◽  
Systematic Review ◽  
Green Tea ◽  
Meta Analysis ◽  
Tea Consumption

scholarly journals Green tea, black tea and colorectal cancer risk: a meta-analysis of epidemiologic studies

2006 ◽  
Vol 27 (7) ◽  
pp. 1301-1309 ◽  
Author(s):  
Can-Lan Sun ◽  
Jian-Min Yuan ◽  
Woon-Puay Koh ◽  
Mimi C. Yu
Keyword(s):  
Colorectal Cancer ◽  
Cancer Risk ◽  
Green Tea ◽  
Meta Analysis ◽  
Black Tea ◽  
Epidemiologic Studies ◽  
Colorectal Cancer Risk

Green tea consumption and breast cancer risk or recurrence: a meta-analysis

2009 ◽  
Vol 119 (2) ◽  
pp. 477-484 ◽  
Author(s):  
Adeyemi A. Ogunleye ◽  
Fei Xue ◽  
Karin B. Michels
Keyword(s):  
Breast Cancer ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Green Tea ◽  
Meta Analysis ◽  
Tea Consumption
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