Tea Advisory Panel

Heart Health

More and more evidence is being published in peer-reviewed journals linking tea to potential wellbeing benefits. An epidemiological study with the object of following the impact of diet and life-style choices on a group of people has shown an inverse correlation between tea consumption (compared to non-tea drinkers) and long-term health benefits.1,2 The group of people followed here were 4,807 men and women 55 years old or over. The studies suggest a group of plant components called flavonoids could be the reason for these benefits.  Tea accounts for a major proportion of total flavonoid intake in a number of Western countries, including the UK.3,4,5. While this study and others show positive trends not all studies do so6.  As a result, more work is needed to prove cause and effect in human populations and to understanding how flavonoids are having this effect.

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References:

1 Geleijnse, J.M.; Launer, L.J.; Van der Kuip, D.A.; Hofman, A.; Witteman, J.C. Inverse association of tea and flavonoid intakes with incident myocardial infarction: The Rotterdam Study. Am. J. Clin. Nutr. 2002, 75, 880–886.
2 Grassi, D.; Aggio, A.; Onori, L.; Croce, G.; Tiberti, S.; Ferri, C.; Ferri, L.; Desideri, G. Tea, flavonoids, and nitric oxide-mediated vascular reactivity. J. Nutr2008, 138, 1554S–1560S
3 Bravo, L. Polyphenols: Chemistry, dietary sources, metabolism, and nutritional significance. Nutr. Rev. 1998, 56, 317–333.
4 Geleijnse, J.M.; Launer, L.J.; Van der Kuip, D.A.; Hofman, A.; Witteman, J.C. Inverse association of tea and flavonoid intakes with incident myocardial infarction: The Rotterdam Study. Am. J. Clin. Nutr. 2002, 75, 880–886
5Vogiatzoglou A et al, PLoS One. 2015; 10(5): e0128132. Flavonoid intake in European Adults (18-64 Years) as further evidence of black tea being a major source of flavonoid polyphenols

6Grassi, D.; Aggio, A.; Onori, L.; Croce, G.; Tiberti, S.; Ferri, C.; Ferri, L.; Desideri, G. Tea, flavonoids, and nitric oxide-mediated vascular reactivity. J. Nutr. 2008, 138, 1554S–1560S

Articles and research (2)

Title Date Category Description  
Effects of Tea Consumption on Measures of Cardiovascular Disease 24th May '19 Heart Health Systematic Review of Meta-Analysis Studies and Randomised Controlled Trials
Is black tea consumption associated with a lower risk of cardiovascular disease and type 2 diabetes? 20th Jun '16 Heart Health Research review

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