“…Despite identification of important risk factors for AF, such as old age, arterial hypertension, HF, CAD, valvular heart disease, surgery, and hyperthyroidism, a significant fraction of its risk remains currently unexplained [ 71 ]. Recent studies showed that low vitamin D levels are associated with AF and may be implicated in its pathogenesis, thus suggesting the potential of vitamin D to also become a therapeutic target in this clinical setting [ 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 ].…”