Atrial fibrillation (A-fib) is a heart condition characterized by a fast, irregular heart rate. The Centers for Disease Control and Prevention (CDC) estimate that between 2.7 and 6.1 million people in the United States have been diagnosed with A-fib.
While there are no statistics available for the global incidence of this heart condition, studiespredict that the number of A-fib patients worldwide is on the rise.
The CDC have identified a series of risk factors for A-fib, which include old age, hypertension, diabetes, and heavy drinking. New research led by Prof. Mika Kivimaki, from the Department of Epidemiology at University College London in the United Kingdom, has identified another risk factor: working long hours.