For many years, people have heard that coffee is bad for the heart. Doctors often warn patients with heart rhythm problems to stay away from caffeine because it might trigger an irregular heartbeat. This belief has been part of common medical advice for decades. Coffee is one of the most popular drinks in the world, and many people depend on it to start their day. As a result, the question of whether coffee harms or benefits the heart has become very important for both patients and clinicians.