Atrial fibrillation: Risk factors may include air pollution warns study


The NHS defines atrial fibrillation as a condition where abnormal electrical impulses suddenly start firing in the atria. This results in an irregular or rapid pulse rate which puts the heart at risk of severe complications down the line. A new study has warned that air pollution may be among the condition’s many causes, spurring irregular heartbeat in the young and healthy.

Fan He, PhD, instructor in public health sciences at the Penn State College of Medicine in Hershey, Pennsylvania, said the findings highlight the need for sharper air quality regulation.

He warned: “While relatively rare, irregular heart rhythms can lead to sudden cardiac death in otherwise healthy adolescents and young adults.

“Our findings linking air pollution to irregular heart rhythms suggest that particulate matter may contribute to the risk of sudden cardiac death in youth.”

The study, published in the Journal of the American Heart Association, underlines the importance of identifying modifiable risk factors of cardiac arrhythmia in teenagers to prevent sudden death in adulthood.

READ MORE: Atrial fibrillation cases on ‘staggering rise’ – experts issue warning

The research was conducted on a sample of 322 adolescents who were free of major cardiovascular conditions and considered at low risk for irregular heart rhythms.

The focus of the study was the analysis of air pollution effects on two types of irregular heart rhythms.

Both were characterised by premature contractions in the heart muscle which is described as a “skipped heartbeat”.

Although premature atrial contractions rarely produce symptoms or harm, they are related to a risk of atrial fibrillation in the long run.


The study reinforces previous warnings from the American Health Association, over the link between air pollution and cardiovascular disease.

In 2017, exposure to air pollution was estimated to be associated with more than seven million premature deaths.

“Our study found that air pollution increases the risk of cardiovascular diseases and sudden cardiac death, even among healthy adolescents,” noted Mr He.

He added: “Protective measures, such as wearing masks and avoiding vigorous physical activities, may be warranted on days that particulate matter concentration is high, especially during early morning rush hours.”



Leave a comment