AFib in Women: Why Risk and Treatment Differences Matter
Atrial fibrillation (AFib) is the most common heart rhythm disorder in the world. It happens when the upper chambers of the heart beat in a fast and irregular way, which can increase the risk of stroke, heart failure, and other serious complications.
Although AFib affects both men and women, women often experience the condition differently — and in many cases, more severely. Research shows that women with AFib have a higher risk of stroke, worse symptoms, and are less likely to receive advanced treatments compared with men. Understanding these differences can help women recognize symptoms earlier and receive the right care sooner.
AFib Becomes More Common in Women Later in Life
Women are generally diagnosed with AFib at an older age than men. While men tend to develop AFib earlier, the number of women with AFib rises sharply after age 75. In fact, after age 75, women make up about 60% of all patients living with AFib.
Women with AFib are also more likely to have other health conditions, including:
These additional conditions can make AFib more difficult to manage and may increase the risk of complications.
Symptoms in Women Are Often Worse
Women with AFib frequently report more severe symptoms than men. Common symptoms include:
Some women may also have “atypical” symptoms that are harder to recognize, which can delay diagnosis. Studies show that women often experience a lower quality of life because of AFib symptoms.
Despite having more symptoms, women are less likely to be referred to a heart rhythm specialist (electrophysiologist) and less likely to receive treatments such as electrical cardioversion or catheter ablation.
Women Face a Higher Stroke Risk
One of the most important differences in AFib between men and women is stroke risk.
Women with AFib have about a 20–30% higher risk of stroke compared with men, even after accounting for other health conditions. AFib-related strokes in women also tend to be more severe and more disabling.
Doctors use a scoring system called CHA₂DS₂-VASc to estimate stroke risk in patients with AFib. Female sex is included as a risk factor in this score because research consistently shows that women are at higher risk for stroke when AFib is present.
Blood Thinners Are Important — But Women Receive Them Less Often
Blood thinners, also called anticoagulants, help prevent strokes in people with AFib. Current guidelines recommend anticoagulation for most women with a CHA₂DS₂-VASc score of 3 or higher.
Today, direct oral anticoagulants (DOACs) such as apixaban and rivaroxaban are usually preferred over warfarin because they are associated with:
Lower stroke risk
Less major bleeding
Better overall safety
Research suggests these medications work very well in women.
However, studies continue to show that women are less likely than men to receive anticoagulant therapy, even though their stroke risk is often higher.
Rhythm Control and Ablation: Delayed Access for Women
Many patients with AFib benefit from rhythm control strategies, which aim to restore and maintain a normal heart rhythm. These treatments can include medications, cardioversion, or catheter ablation.
Women often face unique challenges with these therapies:
Greater risk of side effects from antiarrhythmic drugs
Higher risk of QT prolongation and dangerous arrhythmias
Later referral for catheter ablation
More advanced disease by the time treatment occurs
Some studies also suggest women may have a higher rate of AFib recurrence after ablation.
The good news is that newer guidelines strongly emphasize the importance of early and equitable rhythm control treatment for women. Experts now recognize that delayed treatment may contribute to poorer outcomes.
Why Do These Treatment Gaps Exist?
Researchers are still trying to understand why women with AFib are less likely to receive advanced care. Possible reasons include:
Delayed recognition of symptoms
Referral bias
Differences in healthcare access
Misunderstanding of women’s cardiovascular symptoms
Patient concerns about procedures or medications
More awareness among both patients and healthcare providers is needed to close these gaps and improve outcomes for women.
What Women Should Know About AFib
Women should not ignore symptoms such as palpitations, fatigue, shortness of breath, or dizziness — especially later in life. Early diagnosis and treatment can significantly reduce the risk of stroke and improve quality of life.
Important questions women can ask their healthcare providers include:
What is my stroke risk?
Do I need a blood thinner?
Should I see an electrophysiologist?
Am I a candidate for catheter ablation?
What lifestyle changes can help reduce AFib episodes?
Final Thoughts
AFib in women is not simply the same disease seen in men. Women often experience more symptoms, greater stroke risk, and unequal access to advanced treatments. Recognizing these differences is essential for improving outcomes and reducing preventable complications.
As awareness grows, healthcare providers are increasingly focusing on earlier diagnosis, personalized treatment, and equitable access to care for women with AFib. With proper treatment and monitoring, many women with AFib can live healthy, active lives.
References
Volgman AS, Benjamin EJ, Curtis AB, et al. Women and atrial fibrillation. Journal of Cardiovascular Electrophysiology. 2021.
Gillis AM. Atrial Fibrillation and Ventricular Arrhythmias: Sex Differences in Electrophysiology, Epidemiology, Clinical Presentation, and Clinical Outcomes. Circulation. 2017.
2023 ACC/AHA/ACCP/HRS Guideline for the Diagnosis and Management of Atrial Fibrillation. Journal of the American College of Cardiology. 2024.
Cho L, Davis M, Elgendy I, et al. Summary of Updated Recommendations for Primary Prevention of Cardiovascular Disease in Women. JACC. 2020.
