Marott JL, et al. - Given that height is an important risk factor for atrial fibrillation (AF), researchers evaluated the role of changes in population height in the increased risk of AF in the Copenhagen City Heart Study. They analyzed results of physical examinations, electrocardiograms (ECG), and standard questionnaires as conducted in four separate cross-sectional surveys in 1976-1978, 1981-1983, 1991-1994, and 2001-2003 on 18,852 randomly selected men and women aged 20-93 years. Based on the findings, height was considered a powerful risk factor for AF. Adult height was attained at age 20, while AF incidence occurred 50 years later. They noted that in Denmark, there will be a contribution of increased population height to an increase in AF occurrence for at least 25 more years as a causal association between height and AF incidence has been suggested.