Does atrial fibrillation run in families?

Answer From Peter Noseworthy, M.D.

It can. Atrial fibrillation (AFib) is a heart rhythm disorder. It causes irregular and chaotic heartbeats that can lead to stroke. AFib that is passed down through families (inherited) is called familial atrial fibrillation.

It's not known how many people have familial atrial fibrillation (familial AFib). But researchers have identified genetic changes linked to the condition.

Usually, common risk factors lead to atrial fibrillation. For example, the risk of developing atrial fibrillation increases with age. Other things that increase the chances of developing AFib are:

  • Diabetes
  • Heart valve disease
  • Heavy alcohol use
  • High blood pressure
  • Male gender
  • Obesity

But about 3 in 10 people with AFib have no identifiable risk factors. Researchers think gene changes may play a role in these cases. If you have familial atrial fibrillation, you may get it earlier in life than do those without a family history of the condition.

Understanding the genetics of atrial fibrillation is important. It could lead to screening tests to better identify and treat those at risk of AFib as they grow older. But more research is needed.

If someone in your family has atrial fibrillation and you're concerned about your risk, talk with a health care provider. AFib is a serious medical condition that requires proper treatment to prevent stroke. Early diagnosis can help prevent complications. A simple test called an electrocardiogram (ECG) can be done to check the heart rhythm. Sometimes, a heart monitor is worn for a few days at home.

You might not be able to prevent familial atrial fibrillation. But lifestyle changes can help keep your heart as healthy as possible. Try these strategies:

  • Eat a healthy diet.
  • Get regular exercise.
  • Don't smoke.
  • Manage weight.
  • Limit alcohol.
  • Get 7 to 9 hours of sleep daily.

With

Peter Noseworthy, M.D.

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Oct. 11, 2022 See more Expert Answers

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  2. Atrial fibrillation
  3. Atrial fibrillation ablation
  4. Atrial fibrillation and managing stress
  5. AV node ablation
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  7. Cardiac ablation
  8. Caregiving for someone with atrial fibrillation
  9. Does older age increase the risk of atrial fibrillation?
  10. Echocardiogram
  11. Ejection fraction: What does it measure?
  12. Electrocardiogram (ECG or EKG)
  13. EP study
  14. Heart palpitations
  15. Heart Rhythm Conditions
  16. Holter monitor
  17. Mayo Clinic Minute: Identifying and treating atrial fibrillation
  18. Low blood pressure (hypotension)
  19. Maze procedure
  20. Minimally invasive heart surgery
  21. Planning to travel with atrial fibrillation?
  22. Pregnancy and atrial fibrillation
  23. Pulmonary vein isolation
  24. Shortness of breath
  25. Should I make changes to my diet if I've been diagnosed with atrial fibrillation?
  26. X-ray