Atrial fibrillation (AF, or afib) affects nearly 10% of adults over 65 and more than 15% of those over 70. It sometimes goes unnoticed, but noticed or not, it can be life-threatening. AF usually requires treatment with medications, so I’m often asked questions about it by my patients. In this post you’ll learn what AF is, how to spot symptoms, why it’s dangerous, and what you can do to keep