If a parent, sibling or close relative is living with atrial fibrillation (AFib), it's natural to wonder if you will also be diagnosed with the condition.
The answer is definitely worth paying attention to, because yes, genetics can play a role in your AFib risk. The good news? There are also factors within your control.
Let's take a closer look at what an AFib diagnosis in your family means for you and the proactive steps you can take today.
AFib is the most common type of irregular heartbeat (arrhythmia). In a healthy heart, electrical signals coordinate each beat in a smooth, steady rhythm. In AFib, those signals become chaotic, causing the upper chambers of the heart to quiver rather than pump effectively and can make your lower chambers of the heart go irregular and fast.
Over time, AFib can lead to serious complications, including stroke, heart failure and a reduced quality of life. The condition is also becoming increasingly common: the Centers for Disease Control and Prevention (CDC) estimates that up to 12.1 million people in the United States will be living with AFib by 2050. This makes understanding your personal risk—including your family history—more important than ever.
Related: What is AFib? Risk factors, treatment options and strategies to keep thriving
Yes, AFib can be hereditary.
Research published in Circulation Research confirms that having a first-degree relative (a parent, sibling or child) with AFib meaningfully increases your own likelihood of developing the condition. This is what cardiologists call a "familial pattern," and it points to a genetic component that scientists have been actively studying.
Researchers have identified mutations in several genes involved in how the heart's electrical system functions. When these variants are inherited, they can make the heart more susceptible to the kind of erratic activity that causes AFib.
A specific form of AFib, known as familial atrial fibrillation, is recognized as a distinct genetic condition and one that can run through families across generations.
That said, it's important to understand that genetics is only part of the picture. AFib is considered a complex, “multifactorial” condition, meaning both inherited traits and lifestyle or environmental factors contribute to whether it develops.
Having a family history of AFib doesn't guarantee you'll develop it, and not having a family history doesn't mean you're completely protected, either. That's because AFib risk is shaped by a combination of factors, including:
If you have a family history and one or more of these additional risk factors, your cumulative risk may be higher, making proactive monitoring especially important.
Genetic testing for AFib is an evolving area. While it's not yet standard practice to screen everyone with a family history, genetic counseling or testing may be appropriate in certain situations—particularly when AFib has appeared in multiple generations of a family, occurred at an unusually young age or is accompanied by other inherited heart conditions.
If you're curious about whether genetic testing makes sense for you, a conversation with a cardiologist or genetic counselor is the best place to start. They can review your personal and family history and help determine whether testing would provide meaningful guidance for your care.
Here's the empowering truth: while you can't change your genes, you have significant influence over many of the factors that determine whether AFib develops, or how well it's managed if it does. You might even be wondering which AFib treatment is right for you. Here’s what you can do first:
You don't have to wait for symptoms to seek guidance. If AFib runs in your family, connecting with a cardiologist for a risk assessment is a smart, proactive step.
Reach out sooner rather than later if you:
Whether you're looking for a baseline assessment, advanced cardiac imaging or a personalized prevention plan, your provider can help you understand your risk and take meaningful action.
Is AFib hereditary? The science says it can be, and if it runs in your family, that's a signal worth taking seriously. But a family history of AFib is a reason to be proactive, not to panic.
With the right information, the right lifestyle habits and access to expert cardiac care, you have real power to protect your heart health.
Ready to understand your heart health risk? Take our heart health quiz or speak to a doctor.
Dr. Tripuraneni is a cardiac electrophysiologist on the medical staff of Baylor Scott and White Medical Center – Taylor. He has a strong focus on interdisciplinary, team-based patient care, and his expertise includes various device implantations, such as transvenous pacemakers, defibrillators, subcutaneous defibrillator placement, cardiac resynchronization therapy, conduction system pacing, and leadless pacemakers.
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