I am only one example, so not representative of a general rule. In my case, no, I needed a catheter ablation in order to stem my AF. I know of some who don't have apnea, did develop AF, and who control it really well with magnesium supplements and other concoctions that they have been determined to use rather than to take prescription drugs and undergo surgery. Those cases number two (2), although there are surely more. But there are many hundreds of AF sufferers who don't come to this forum, or to apneaboard.com forums, who cannot control their AF by any means other than through anti-arrhythmic drugs or cardioversion or ablation. In my case, to return to it, I have controlled my apnea right from the second night very well, but I still had bouts of AF, and they began to get worse over the next three years.