Abstract Title:

Coffee and tea consumption and mortality from all causes, cardiovascular disease and cancer: a pooled analysis of prospective studies from the Asia Cohort Consortium.

Abstract Source:

Int J Epidemiol. 2021 Sep 1. Epub 2021 Sep 1. PMID: 34468722

Abstract Author(s):

Sangah Shin, Jung Eun Lee, Erikka Loftfield, Xiao-Ou Shu, Sarah Krull Abe, Md Shafiur Rahman, Eiko Saito, Md Rashedul Islam, Shoichiro Tsugane, Norie Sawada, Ichiro Tsuji, Seiki Kanemura, Yumi Sugawara, Yasutake Tomata, Atsuko Sadakane, Kotaro Ozasa, Isao Oze, Hidemi Ito, Myung-Hee Shin, Yoon-Ok Ahn, Sue K Park, Aesun Shin, Yong-Bing Xiang, Hui Cai, Woon-Puay Koh, Jian-Min Yuan, Keun-Young Yoo, Kee Seng Chia, Paolo Boffetta, Habibul Ahsan, Wei Zheng, Manami Inoue, Daehee Kang, John D Potter, Keitaro Matsuo, You-Lin Qiao, Nathaniel Rothman, Rashmi Sinha

Article Affiliation:

Sangah Shin


BACKGROUND: Accumulating evidence suggests that consuming coffee may lower the risk of death, but evidence regarding tea consumption in Asians is limited. We examined the association between coffee and tea consumption and mortality in Asian populations.

METHODS: We used data from 12 prospective cohort studies including 248 050 men and 280 454 women from the Asia Cohort Consortium conducted in China, Japan, Korea and Singapore. We estimated the study-specific association of coffee, green tea and black tea consumption with mortality using Cox proportional-hazards regression models and the pooled study-specific hazard ratios (HRs) using a random-effects model.

RESULTS: In total, 94 744 deaths were identified during the follow-up, which ranged from an average of 6.5 to 22.7 years. Compared with coffee non-drinkers, men and women who drank at least five cups of coffee per day had a 24% [95% confidence interval (CI) 17%, 29%] and a 28% (95% CI 19%, 37%) lower risk of all-cause mortality, respectively. Similarly, we found inverse associations for coffee consumption with cardiovascular disease (CVD)-specific and cancer-specific mortality among both men and women. Green tea consumption was associated with lower risk of mortality from all causes, CVD and other causes but not from cancer. The association of drinking green tea with CVD-specific mortality was particularly strong, with HRs (95% CIs) of 0.79 (0.68, 0.91) for men and 0.78 (0.68, 0.90) for women who drank at least five cups per day of green tea compared with non-drinkers. The association between black tea consumption and mortality was weak, with no clear trends noted across the categories of consumption.

CONCLUSIONS: In Asian populations, coffee consumption is associated with a lower risk of death overall and with lower risks of death from CVD and cancer. Green tea consumption is associated with lower risks of death from all causes and CVD.

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