The study examined the green tea and coffee drinking habits of around 82,000 Japanese adults, aged between 45 and 74, over a 13 year period. Researchers found that the more green tea or coffee people drink, the lower their risk of having a stroke.
The Journal of the American Heart Association features this research.
Tea and coffee are the most popular drinks in the world after water, suggesting that these results may apply in other countries, too.
In summary, the study found:
- People who drank at least 1 cup of coffee daily had about a 20% lower risk of stroke compared to those who rarely drank it.
- People who drank 2 to 3 cups of green tea daily had a 14% lower risk of stroke, and those who had at least 4 cups had a 20% lower risk, compared to those who rarely drank it.
- People who drank at least 1 cup of coffee or 2 cups of green tea daily had a 32% lower risk of intracerebral hemorrhage, compared to those who rarely drank either beverage. Intracerebral hemorrhage happens when a blood vessel bursts and bleeds inside the brain. About 13% of strokes are due to this condition.