Coffee, Black Tea, and Green Tea Consumption in Relation to Plasma Metabolites in an Asian Population

Tea is one of the most-widely consumed beverages in the world with a number of different beneficial health effects, mainly ascribed to the polyphenolic content of the tea catechins. The aim of this study was to examine the consumption of green, black, or no tea, in relation to the previously validated successful ageing index (SAI; higher values “healthier” ageing) in a combined analysis of adults aged >50 years old from the ATTICA (n = 1128 adults from Athens, Greece metropolitan area) and the MEDiterranean Islands Study (MEDIS) (n = 2221 adults from various Greek island and Mani) studies. After adjusting for age, sex, smoking, and coffee consumption, green tea was positively associated with SAI (b ± SE: 0.225 ± 0.055, p < 0.001), while black tea was negatively associated with SAI (unstandardized b coefficient ± Standard error: −0.807 ± 0.054, p < 0.001). Green tea (vs black tea) consumption, had higher odds of a SAI of over 3.58 out of 10 (OR: 1.77, 95% CI: 1.38–2.28). Green tea consumption was also associated with higher levels of physical activity (p < 0.001) and reduced likelihood of hypertension (p = 0.006) compared with black tea. Two possible mechanisms are that green tea possesses high levels of catechins such as (−)-epigallocatechin 3-gallate and l-theanine compared with black tea. Therefore, the present analysis supports both the role of green tea constituents in successful ageing, as well as its role as an important component of an overall healthy diet in adults aged 50 years and over from these two epidemiological studies.

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

Proceedings of The Nutrition Society ◽

10.1017/s0029665120001573 ◽

2020 ◽

Vol 79 (OCE2) ◽

Cited By ~ 1

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.

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The modulatory effect of infusions of green tea, oolong tea, and black tea on gut microbiota in high-fat-induced obese mice

Food & Function ◽

10.1039/c6fo01439a ◽

2016 ◽

Vol 7 (12) ◽

pp. 4869-4879 ◽

Cited By ~ 70

Author(s):

Zhibin Liu ◽

Zhichao Chen ◽

Hongwen Guo ◽

Dongping He ◽

Huiru Zhao ◽

...

Keyword(s):

Gut Microbiota ◽

Green Tea ◽

Black Tea ◽

Tea Consumption ◽

Obese Mice ◽

High Fat ◽

Oolong Tea

Tea consumption has been identified to have a gut microbiota modulatory effect, which may be related to its anti-obesity effect.

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Faculty Opinions recommendation of Green tea and black tea consumption in relation to colorectal cancer risk: the Singapore Chinese Health Study.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1090568.543848 ◽

2007 ◽

Author(s):

Paolo Vineis

Keyword(s):

Colorectal Cancer ◽

Cancer Risk ◽

Green Tea ◽

Black Tea ◽

Colorectal Cancer Risk ◽

Health Study ◽

Tea Consumption ◽

Singapore Chinese

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Coffee, green tea, black tea and oolong tea consumption and risk of mortality from cardiovascular disease in Japanese men and women

Journal of Epidemiology & Community Health ◽

10.1136/jech.2009.097311 ◽

2009 ◽

Vol 65 (3) ◽

pp. 230-240 ◽

Cited By ~ 123

Author(s):

Y. Mineharu ◽

A. Koizumi ◽

Y. Wada ◽

H. Iso ◽

Y. Watanabe ◽

...

Keyword(s):

Cardiovascular Disease ◽

Green Tea ◽

Black Tea ◽

Tea Consumption ◽

Japanese Men ◽

Men And Women ◽

Oolong Tea ◽

Risk Of Mortality

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Green tea consumption in everyday life and mental health

Public Health Nutrition ◽

10.1079/phn2005752 ◽

2005 ◽

Vol 8 (8) ◽

pp. 1300-1306 ◽

Cited By ~ 34

Author(s):

Mari Shimbo ◽

Keiko Nakamura ◽

Hui Jing Shi ◽

Masashi Kizuki ◽

Kaoruko Seino ◽

...

Keyword(s):

Mental Health ◽

Everyday Life ◽

Green Tea ◽

General Health Questionnaire ◽

Black Tea ◽

Population Based ◽

Cross Sectional Study ◽

Caffeine Intake ◽

Tea Consumption ◽

Cross Sectional

AbstractObjectiveGreen tea has been widely acknowledged in Japan to induce a pleasurable mental feeling. Recent laboratory studies have suggested positive psychological effects as a result of consuming green tea. The present study examined whether green tea consumption in everyday life in Japan is associated with positive mental health.DesignA cross-sectional study was performed in February–March 2002.Setting and subjectsThe subjects of the study consisted of a general population of 600 Japanese aged 20–69 years. Responses of 380 subjects, obtained by home-visit interview, were analysed. The questionnaire inquired about consumption of brewed green tea and other beverages, perceived mental health status, lifestyle and others. The 12-item General Health Questionnaire (GHQ 12) was used for the assessment of mental ill-health (GHQ score ≥4).ResultsAfter adjustments for age, area, perceived mental stress, lifestyle and daily caffeine intake, the consumption of brewed green tea was not statistically associated with any decrease in risk of mental ill-health among either males or females (odds ratio (OR) = 0.78, 95% confidence interval (CI) = 0.47–1.29 for males; OR = 0.77, 95% CI = 0.51–1.14 for females). Daily caffeine intake (100 mg) inclusive of green tea, black tea, coffee and other caffeine-containing beverages was associated with a higher risk of mental ill-health among females (OR = 1.26, 95% CI = 1.01–1.56).ConclusionsThe results provide population-based evidence on the consumption of brewed green tea in everyday life and mental health, together with information on consumption patterns of various beverages and lifestyles.

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