Can atrial fibrillation occur in individuals without heart disease?

Atrial fibrillation can indeed occur in individuals without any underlying heart disease. This condition can develop due to a variety of factors that are not exclusively related to heart structure or function. For example, it can be triggered by stress, excessive alcohol consumption, sleep apnea, or even thyroid issues. Additionally, in younger patients or those with no evident heart disease, idiopathic atrial fibrillation can occur, where no specific cause is identified.

This understanding emphasizes that while atrial fibrillation is commonly associated with heart problems, it is not confined solely to those who have pre-existing heart conditions. This knowledge is essential for healthcare providers when assessing patients presenting with symptoms of atrial fibrillation, even if there are no apparent heart issues.