Can magnesium help atrial fibrillation?

Magnesium and afib: Research studies on this topic have yielded inconsistent results. These studies were done in patients who had undergone coronary bypass surgery. Some of the studies seem to suggest that magnesium levels need to be increased to 2.0 meq/l or more to prevent atrial fibrillation. Provided that kidney function is normal, there would be no harm in using magnesium supplements in this setting.

Sometimes: While magnesium is not one of the primary treatments for atrial fibrillation there are situations where supplementation may be beneficial. Atrial fibrillation is typically a results of many factors and thus there is no one single treatment.

Apparently Not: "they" looked into that years ago. No benefit to high dose mag supplementation, though it did show initial promise. Too bad :( would have been a lot simpler than the measures we use now.