The LEGACY study found that weight loss improved both symptoms and cardiac arrhythmias in persons with atrial fibrillation.
Medscape discusses the findings of the LEGACY trial here:
http://www.medscape.com/viewarticle/841515 (for registered users of Medscape)
Here is a link to the article's abstract:
I wonder how much of the improvement in atrial fibrillation came from the treatment (by weight loss) of undiagnosed obstructive sleep apnea???
There is strong evidence for a relationship between OSA and atrial fibrillation. Control of obstructive sleep apnea through CPAP treatment approximately doubles the success rate of rhythm control in persons with atrial fibrillation.