Coffee And Green Tea Reduce the Risk of Death After A Heart Attack or Stroke
People who have survived a heart attack or stroke would do well to try green tea or coffee. At least that’s what a new scientific study suggests, published February 4 in the trade journal Stroke.
“There is a strong need for scientific evidence on the lifestyles of stroke and heart attack survivors given the rapidly aging population and the need to improve life expectancy following these cardiovascular events” said Dr. Hiroyasu Iso, professor of public health at Osaka University, Japan, and co-author of the study.
The researchers analyzed data from more than 46,000 participants (aged 40 to 79, with a proportion of 60% women) of the Japan Collaborative Cohort Study for Evaluation of Cancer Risk (or “JACC study”), a study conducted in 45 communities across Japan.
Participants were asked to fill out questionnaires to find out about their lifestyle, medical history and eating habits. They were then divided into three groups: history of stroke, history of myocardial infarction, and no history of this type. The researchers then analyzed how much and how often green tea and coffee were consumed, considering that one cup of green tea contains about 100 ml and one cup of coffee 150 ml.
Verdict: Compared to participants who rarely drank green tea, stroke survivors who consumed at least seven cups of green tea per day reduced their risk of all-cause mortality by approximately 62%. Researchers did not see a statistically significant association among participants without a history of stroke or heart attack with green tea. As for those participants with a history of heart attack, they had an approximately 22% reduced risk of death if they drank one cup of coffee per day, compared to those who did not. Coffee would also be beneficial for people without a cardiovascular history, since those who consumed one or more cups of coffee per week had a 14% reduced risk of all-cause mortality compared to non-coffee drinkers.
Important note, however: “In Japanese culture, green tea is generally prepared with water and without sugar. In addition, coffee is made with water and sometimes milk and sugar, ”said Dr Hiroyasu Iso. “The healthiest way to prepare these drinks is not to add sugar,” he recalled.
Note that while the study does not say how tea and coffee reduce the risk of death, since this is only a correlation study, green tea and coffee are rich in polyphenols, antioxidants with many health benefits.
Coffee And Green Tea are Said to Reduce the Risk of Death After A Heart Attack or Stroke - /10