Several epidemiological studies indicate an inverse association between intake of tea and coronary heart disease. However, the results of these studies have been somewhat controversial. In the older cohort of the Rotterdam Study, Geleijnse et al1 found an inverse association between drinking tea and aortic atherosclerosis. The protective effect was more pronounced in women than in men. In the Health Professionals Follow-up Study2 and the Caerphilly Study,3 which both included men only, no protective effect of tea or flavonoids was found.
Erlund I, Alfthan G, Mäenpää J, Aro A. Tea and Coronary Heart Disease: the Flavonoid Quercetin Is More Bioavailable From Rutin in Women Than in Men. Arch Intern Med. 2001;161(15):1919–1920. doi:
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