Tea consumption and risk of ischaemic heart disease

Abstract

ObjectiveTo prospectively examine the association between tea consumption and the risk of ischaemic heart disease (IHD).MethodsProspective study using the China Kadoorie Biobank; participants from 10 areas across China were enrolled during 2004–2008 and followed up until 31 December 2013. After excluding participants with cancer, heart disease and stroke at baseline, the present study included 199 293 men and 288 082 women aged 30–79 years at baseline. Information on IHD incidence was collected through disease registries and the new national health insurance databases.ResultsDuring a median follow-up of 7.2 years, we documented 24 665 (7.19 cases/1000 person-years) incident IHD cases and 3959 (1.13 cases/1000 person-years) major coronary events (MCEs). Tea consumption was associated with reduced risk of IHD and MCE. In the whole cohort, compared with participants who never consumed tea during the past 12 months, the multivariable-adjusted HRs and 95% CIs for less than daily and daily tea consumers were 0.97 (0.94 to 1.00) and 0.92 (0.88 to 0.95) for IHD, 0.92 (0.85 to 1.00) and 0.90 (0.82 to 0.99) for MCE. No linear trends in the HRs across the amount of tea were observed in daily consumers for IHD and MCE (PLinear >0.05). The inverse association between tea consumption and IHD was stronger in rural (PInteraction 0.006 for IHD, <0.001 for MCE), non-obese (PInteraction 0.012 for MCE) and non-diabetes participants (PInteraction 0.004 for IHD).ConclusionsIn this large prospective study, daily tea consumption was associated with a reduced risk of IHD.

Tea consumption is associated with a reduced risk of coronary heart disease in female but not male populations in Guangzhou, China

“…Tea consumption has been shown to be useful for the prevention of many debilitating human diseases. Several published studies have reported similar results to those reported herein, showing that tea consumption can reduce CHD risk [1112]. In our study, we observed that tea consumption was associated with a reduced risk of CHD in female participants, but not in male participants, in Guangzhou, China.…”

“…However, another meta-analysis of tea consumption in relation to stroke, myocardial infarction, and all coronary heart disease (CHD) showed that there was an increased risk of CHD and stroke in populations with increased tea consumption [10]. A large prospective study showed that regular green tea consumption was associated with a significantly reduced risk of death from all causes, cardiovascular disease, and cancer among Chinese adults [11]. Unanswered questions from these studies include whether sex, age, type of tea, or the amount of tea consumed can produce these different results.…”

Tea consumption and the risk of atherosclerotic cardiovascular disease and all-cause mortality: The China-PAR project

“…3–11 Evidence from China is still limited to male gender, local areas, or a certain disease outcome. 12–17 Therefore, the inverse association of tea consumption with ASCVD and all-cause mortality warrants further investigations based on nationwide cohorts.…”

Deciphering the Riddles in Nutrition and Cardiovascular Disease

“…[97][98][99] These effects translate into a lower risk of developing CHD and major cardiac events, even all-cause mortality. 100,101 The evidence for a favourable CVD profile is based on regular tea consumption (3-5 cups/day) without added sugars, sweeteners or milks and creams (both animal and plant-based), and that should be the proper way to tackle any recommendation on this beverage.…”