Probably not. In a ten years of follow-up of 1354 elderly people who did not have high blood pressure, those who drank one or more cups of caffeinated coffee per day had a 43 percent lower risk of coronary heart disease than those who did not drink caffeinated coffee (From the Framingham Heart Study, reported in the American Journal of Cardiology, December 2008).
Nobody really knows why, but it may be that caffeine causes muscles to burn more fat to preserve sugar stored in muscles. This gives people greater endurance and helps them to exercise longer. Regular exercise helps to prevent heart attacks. However, since caffeine can increase blood pressure in people who already have high blood pressure, those with high blood pressure probably should restrict caffeine.
