A new study done in Germany wants to counteract the myth that coffee is bad for your heart. In fact, four cups of joe may actually help it.  

The study found that a new protein acted on by coffee may improve the outcome after heart disease.  That study, conducted in mice, showed that four cups of coffee is key to helping a certain protein function. This protein, p27 when acted on by caffeine, improved the outcome after heart attacks.  

With obesity and type 2 diabetes prevalent in the United States, it's possible that the connection between caffeine and p27 can reduce the risk that comes with these diseases because of their connection to poor heart health. 

The results showed that caffeine acts on the protein, allowing cells to get more energy and blood flow throughout the heart. This means fewer heart cells dying. More caffeine meant more effective protein and even better survival.  

With coffee being a potential protectant for the heart, the researchers would like to further look into this. The next step is to look at this protein outside of mice and in humans.  The study also warns, "regardless of the research, it's important to drink in moderation."