Ever heard the phrase “my heart skipped a beat”? As a song lyric it’s poetic; in real life it can be deadly—and we can add weed to the list of drugs that causes it. Marijuana use increased threefold the risk of developing the most dangerous kind of heart arrhythmia, per research from the University of California, Georgetown, and elsewhere. This kind of arrhythmia can literally kill you. Data on all the horrible things marijuana can do to your heart continue to be pumped out in real-time; this is just the latest bad news. Don’t wait for more evidence to come out before your heart’s skipped beat becomes a flatline on an EKG.