咖啡虽然是一种很受欢迎的饮品，但却不见得很健康。科学家们普遍相信它所含有的咖啡因成分会增加一个人换心脏病的风险，而本身就是心脏病患者就更是要杜绝了！
Coffee May Trigger Heart Attack
That cup of coffee you're craving might not be such a good idea.
Research in the September issue of Epidemiology suggests coffee can trigger a heart attack within an hour in some people.
Java junkies can take some comfort from the finding that the risk was highest among light coffee drinkers (those who consumed up to one cup a day).
For those people, the risk of heart attack increased fourfold when they indulged.
Couch potatoes and those with other risk factors for heart disease were also at greater risk of having a heart attack after drinking a cup of coffee, the study showed.
As a result of these findings, "people at high risk for a heart attack who are occasional or regular coffee drinkers might consider quitting coffee altogether," says researcher Ana Baylin, a research associate at Brown University School of Medicine in Providence, RI, in a news release.
Baylin, who works in the department of nutrition at Brown, adds that for these individuals, a cup of coffee could be "the straw that broke the camel's back."
Baylin and colleagues suggest caffeine causes short-term increases in blood pressure and sympathetic nervous activity that could trigger a heart attack.
On the other hand, previous studies have shown coffee drinkers may be at decreased risk for Parkinson's disease, diabetes, and certain types of cancers.
Risk Highest for Light Drinkers