A new study from Northwestern Medicine has brought exciting progress in predicting heart rhythm problems before they even happen. These problems, called arrhythmias, occur when the heart beats too fast, too slow, or irregularly. Some types, like atrial fibrillation (AFib), can increase the risk of stroke, while others can lead to sudden death. Now, researchers [.] The post New DNA test could predict dangerous heart rhythms before they start appeared first on Knowridge Science Report.