Risk factors

Things that can increase the risk of atrial fibrillation (A-fib) include:

• Age. The older a person is, the greater the risk of developing atrial fibrillation.
• Heart disease. Anyone with heart disease — such as heart valve problems, congenital heart disease, congestive heart failure, coronary artery disease, or a history of heart attack or heart surgery — has an increased risk of atrial fibrillation.
• High blood pressure. Having high blood pressure, especially if it's not well controlled with lifestyle changes or medications, can increase the risk of atrial fibrillation.
• Thyroid disease. In some people, thyroid problems may trigger heart rhythm problems (arrhythmias), including atrial fibrillation.
• Other chronic health conditions. People with certain chronic conditions such as diabetes, metabolic syndrome, chronic kidney disease, lung disease or sleep apnea have an increased risk of atrial fibrillation.
• Drinking alcohol. For some people, drinking alcohol can trigger an episode of atrial fibrillation. Binge drinking further increases the risk.
• Obesity. People who have obesity are at higher risk of developing atrial fibrillation.
• Family history. An increased risk of atrial fibrillation occurs in some families.