Drinking 2 to 3 cups of coffee every day might help you live longer. In a new study published in the European Journal of Preventive Cardiology, Australian researchers compared the quantity and type of coffee consumption to the risk of arrhythmias, cardiovascular disease, and all-cause mortality for almost 450,000 adults ages 40 to 69. They found that drinking 2 to 3 cups of coffee a day, regardless of the type of coffee, was consistently associated with the largest risk reduction in cardiovascular disease, coronary heart disease, congestive cardiac failure, and death from any cause. Perhaps surprisingly, drinking caffeinated coffee – but not decaf – was linked to a lower risk of abnormal heart rhythms, like atrial fibrillation.