Lifestyle factors, in particular dietary intake, have been recognized as important, modifiable risk factors for cardiovascular disease. Consuming a heart-healthy diet lowers the individual's risk for CVD. Data on relationship between lifestyle and atrial fibrillation are controversial, however the strong association between obesity, atrial/ventricular dysfunction and a non-healthy lifestyle and atrial fibrillation, suggests that correction of nutritional habits could prevent the development of arrhythmias through reduction of underline cardiac diseases. Today the Mediterranean diet is considered one of the best in term of prevention of cardiovascular disease.