The Role of Tea in Human Health: An Update

McKay, Diane L.; Blumberg, Jeffrey B.

doi:10.1080/07315724.2002.10719187

Cited by 625 publications

(415 citation statements)

References 125 publications

(128 reference statements)

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“…Recently, natural products and herbal medicines with anti-microbial effects have been recognized with increasing interest by clinical pharmacologists. C. sinensis has been proved to possess medicinal and health promotion properties, including the ability to inhibit the growth of some types of pathogenic bacteria [20] .…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial activity of green tea extract against isolates of methicillin–resistant Staphylococcus aureus and multi–drug resistant Pseudomonas aeruginosa

Radji

Agustama

Elya

et al. 2013

Asian Pacific Journal of Tropical Biomedicine

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Section: Discussionmentioning

confidence: 99%

Antimicrobial activity of green tea extract against isolates of methicillin–resistant Staphylococcus aureus and multi–drug resistant Pseudomonas aeruginosa

Radji

Agustama

Elya

et al. 2013

Asian Pacific Journal of Tropical Biomedicine

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“…All proposed health effects of tea are biologically plausible (4,120) . The recommendation is neither inconsistent with previous public health advice (4) nor requires any major deviation from the norm (4,120) .…”

Section: Discussionmentioning

confidence: 99%

Tea or coffee? A case study on evidence for dietary advice

Binns

Lee

Fraser

2008

Public Health Nutr.

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The present paper explores the level of evidence required to justify giving dietary advice to the public. There are important practical differences between the development of public health nutrition guidelines and guidelines for clinical practice. While the gold standard for evidence for clinical practice guidelines is a meta-analysis of a number of randomised controlled trials, this is often unrealistic and sometimes unethical for the evaluation of public health nutrition interventions. Hence, epidemiological studies make up the bulk of evidence for nutrition guidelines. Tea and coffee are an interesting case study in relation to this issue. They are two of the most commonly consumed beverages worldwide, yet there is little dietary advice on their use. The evidence for a relationship between coffee or tea consumption and several diseases is discussed. The available studies, predominantly epidemiological, together with animal and in vitro studies, indicate that coffee and tea are both safe beverages. However, tea is the healthier option because it has a possible role in the prevention of several cancers and CVD. While the evidence for such relationships is not strong, the public will continue to drink both tea and coffee, and will continue to ask nutritionists to make recommendations. It is therefore argued that advice should be given on the best available data, as waiting for complete data to become available could have severe consequences for public health.

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“…-3 Never-smoker is defined as smoking fewer than 100 cigarettes in a lifetime. - 4 No alcohol is defined as drinking fewer than 26 drinks/year. -5 Intake during adolescence.…”

Section: Methodsmentioning

confidence: 99%

Green tea and risk of breast cancer in Asian Americans

Tseng

et al. 2003

Intl Journal of Cancer

313

270

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There is substantial in vitro and in vivo evidence implicating tea polyphenols as chemopreventive agents against various cancers. However, epidemiologic data obtained from mainly Western populations are not supportive of a protective role of tea, mainly black tea, in the etiology of breast cancer. Much less is known about the relationship between green tea and breast cancer risk. During 1995-1998, we conducted a population-based, case-control study of breast cancer among Chinese, Japanese and Filipino women in Los Angeles County and successfully interviewed 501 breast cancer patients and 594 control subjects. Detailed information on menstrual and reproductive factors; dietary habits, including intake of black and green tea; and other lifestyle factors was collected. Risk of breast cancer was not related to black tea consumption. In contrast, green tea drinkers showed a significantly reduced risk of breast cancer, and this was maintained after adjusting for age, specific Asian ethnicity, birthplace, age at menarche, parity, menopausal status, use of menopausal hormones, body size and intake of total calories and black tea. Compared to women who did not drink green tea regularly (i.e., less than once a month), there was a significant trend of decreasing risk with increasing amount of green tea intake, adjusted odds ratios being 1.00, 0.71 (95% confidence interval [CI] 0.51-0.99) and 0.53 (95% CI 0.35-0.78), respectively, in association with no, 0 -85.7 and >85.7 ml of green tea per day. The significant inverse association between risk of breast cancer and green tea intake remained after further adjustment for other potential confounders, including smoking; alcohol, coffee and black tea intake; family history of breast cancer; physical activity; and intake of soy and dark green vegetables. While both green tea and soy intake had significant, independent protective effects on breast cancer risk, the benefit of green tea was primarily observed among subjects who were low soy consumers. Similarly, the protective effect of soy was primarily observed among subjects who were nondrinkers of green tea. In summary, our results point to an important role of both green tea and soy intake in relation to breast cancer risk in Asian-American women.

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The Role of Tea in Human Health: An Update

Cited by 625 publications

References 125 publications

Antimicrobial activity of green tea extract against isolates of methicillin–resistant Staphylococcus aureus and multi–drug resistant Pseudomonas aeruginosa

Antimicrobial activity of green tea extract against isolates of methicillin–resistant Staphylococcus aureus and multi–drug resistant Pseudomonas aeruginosa

Tea or coffee? A case study on evidence for dietary advice

Green tea and risk of breast cancer in Asian Americans

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