Atrial fibrillation and obesity are interlinked epidemics which both impair quality of life.  As the prevalence of both conditions in the US continues to rise, so will the number of obese patients with atrial fibrillation referred for catheter ablation.  Catheter ablation has already been shown to significantly improve quality of life in patients with atrial fibrillation.  Until recently, there has been little attention to the effects of catheter ablation on quality of life specifically in obese patients with atrial fibrillation.  This paper will review what is known about the relationship between atrial fibrillation and obesity, the effects of both on quality of life, and how quality of life is affected in obese patients undergoing AF ablation.