How Does Cold Weather Affect Atrial Fibrillation? We're going to be discussing cold weather and atrial fibrillation and see how cold weather can actually affect a person's atrial of fibrillation. It's winter time now in the United States and there are several articles in the past that have discussed how cold weather can actually affect a person's atrial fibrillation. Now first does cold weather actually affect people getting episodes of afib, do people get more frequent episodes of afib during the winter time? There was a review article which came out of 2015 which showed, yes. They actually reviewed up to 15 different studies and the amount of increase for afib and the increase in hospitalizations ranged anywhere from 200 to up to 300% increase in the amount of afib hospitalizations during the winter time, depending on which individual study that that one study reviewed in. In addition that same study also found an increased risk of stroke for people who have