Green Tea Consumption Improves Prognosis for Stroke, MI Survivors
Masayuki Teramoto, M.D., from the Osaka University Graduate School of Medicine in Japan, and colleagues examined the association between green tea and coffee consumption and mortality among 478 stroke survivors, 1,214 MI survivors, and 44,521 persons without a history of stroke or MI, aged 40 to 79 years at baseline (1988 to 1990).
The researchers documented 9,253 cases of all-cause mortality during the 18.5-year median follow-up period. Among stroke survivors, green tea consumption was inversely associated with all-cause mortality (multivariable hazard ratios [95 percent confidence intervals]: 0.73 [0.42 to 1.27] for one to six cups/week, 0.65 [0.36 to 1.15] for one to two cups/day, 0.56 [0.34 to 0.92] for three to four cups/day, 0.52 [0.31 to 0.86] for five to six cups/day, and 0.38 [0.20 to 0.71] for at least seven cups/day, compared with nondrinkers). MI survivors had a similar inverse association, which was not evident for those without a history of stroke or MI. For persons without a history of stroke or MI, coffee consumption was inversely associated with all-cause mortality; a similar association was seen for MI survivors, while no association was seen for stroke survivors.
"More research is needed to confirm the cardio- and neuro-protective effects of green tea and coffee among cardiovascular disease survivors," the authors write.
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Posted: February 2021
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