selectorI'm not convinced they really know why a person develops AFib.
They also seem to agree that it is not a harbinger of more heart issues to come, but is a relatively benign condition as long as the individual stays on the appropriate meds (primarily anti-coagulants).
Mark P.
Website: http://www.thecbandqinwyoming.comVideos: https://www.youtube.com/user/mabrunton