Bear in mind this study is only considering effect on the heart, caffeine's primary effect will be on your brain. (Plus since the '25 cups' only comes from the

Bear in mind this study is only considering effect on the heart, caffeine's primary effect will be on your brain. (Plus since the '25 cups' only comes from the fact that that is the limit of who they tested, the result is essentially 'we haven't found a level of coffee use that is harmful to the heart, yet'.