| Precise causes of atrial fibrillation can be difficult to identify. High blood pressure and coronary artery disease are associated with AF, as are other heart and lung conditions such as disease of the heart valves, chronic lung disease, and congestive heart failure. Otherwise normal hearts influenced by alcohol, stress, caffeine, severe infections, or some drugs may experience AF. Sometimes, no underlying cause is identified. As you grow older, the risk of AF seems to increase, especially after age 60. |
