Researchers out of Great Britain tracked 2,300 people for 11 years. Those who drank coffee were 27 percent less likely to experience a stroke than those who did not.
The benefits were the same for decaffeinated coffee drinkers, so caffeine is ruled out as the reason.
Researchers suspect antioxidants in coffee lowers inflammation in blood vessels, but more study is needed.
The study was presented at the International Stroke Conference in San Antonio.