Tea Advisory Panel

Green Tea

(Camellia sinensis (L.) Kuntze non-fermentatum)

 

Background:

Green tea is commonly consumed in Asia but was introduced into Europe in the 17th century. Traditionally, green tea has been used for the relief of fatigue and weakness, as a diuretic and for stomach disorders.1

 

Health properties:

Green tea and its constituent catechins have been shown to reduce body fat. A 2005 12-week controlled study in Japanese men found that green tea extract reduced body fat, BMI, body weight and waist circumference.2 A 2009 study in 107 Caucasian subjects also found that green tea extract reduced abdominal fat.3 A 2009 meta-analysis of 11 trials concluded that green tea catechins reduced body weight and body fat.4

Green tea has also been shown to reduce cardiovascular risk. A 2001 meta-analysis of tea intake (black and green) found that the incidence rate of myocardial infarction is estimated to decrease by 11% with an increase in tea consumption of 3 cups/day.5 A 2006 study in Japanese men found that green tea consumption was associated with reduced cardiovascular risk in particular reduced risk of stroke.6 Green tea drinking (120-599 ml daily) has been associated with a 46% reduced risk of hypertension.7 A 2015 meta-analysis found that green tea is associated with reduced CVD mortality and reduced mortality overall.8 There is further evidence to suggest that green tea reduces the risk of diabetes (6 cups daily).9

 

References

1 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

2 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

3 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

4 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

5 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

6 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

7 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

8 Tang et al. Br J Nutr 2015, July 23: 1-11http://www.ncbi.nlm.nih.gov/pubmed/26202661

9 http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2014/04/WC500165886.pdf

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