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Am J Clin Nutr. 2002 May;75(5):880-6.

Inverse association of tea and flavonoid intakes with incident myocardial infarction: the Rotterdam Study.

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1
Department of Epidemiology & Biostatistics, Erasmus Medical Center, Rotterdam, Netherlands.

Abstract

BACKGROUND:

Dietary flavonoids may protect against cardiovascular disease, but evidence is still conflicting. Tea is the major source of flavonoids in Western populations.

OBJECTIVE:

The association of tea and flavonoid intake with incident myocardial infarction was examined in the general Dutch population.

DESIGN:

A longitudinal analysis was performed with the use of data from the Rotterdam Study-a population-based study of men and women aged >or=55 y. Diet was assessed at baseline (1990-1993) with a validated semiquantitative food-frequency questionnaire. The analysis included 4807 subjects with no history of myocardial infarction, who were followed until 31 December 1997. Data were analyzed in a Cox regression model, with adjustment for age, sex, body mass index, smoking status, pack-years of cigarette smoking, education level, and daily intakes of alcohol, coffee, polyunsaturated fat, saturated fat, fiber, vitamin E, and total energy.

RESULTS:

During 5.6 y of follow-up, a total of 146 first myocardial infarctions occurred, 30 of which were fatal. The relative risk (RR) of incident myocardial infarction was lower in tea drinkers with a daily intake >375 mL (RR: 0.57; 95% CI: 0.33, 0.98) than in nontea drinkers. The inverse association with tea drinking was stronger for fatal events (0.30; 0.09, 0.94) than for nonfatal events (0.68; 0.37, 1.26). The intake of dietary flavonoids (quercetin + kaempferol + myricetin) was significantly inversely associated only with fatal myocardial infarction (0.35; 0.13, 0.98) in upper compared with lower tertiles of intake.

CONCLUSIONS:

An increased intake of tea and flavonoids may contribute to the primary prevention of ischemic heart disease.

PMID:
11976162
[Indexed for MEDLINE]
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