Welcome to Atrial Fibrillation Association - US

Atrial Fibrillation Association - United States of America (AFA-US) is a non-profit organization which provides information, support and access to established, new or innovative treatments for atrial fibrillation (AFib).

AFib is the most common heart rhythm disorder (arrhythmia) affecting approximately 2.5 million people in the United States and over five million in Western Europe.


Share your experience

How were you diagnosed with AFib? What treatments have you received? How could services be improved for people with atrial fibrillation?

Answer patient experience survey

AFib explained in exclusive video series

We have worked with our friends at AntiCoagulation Europe (ACE) and world renowned AF expert, Professor John Camm, to produce these informative videos explaining what AFib is, the risks associated with it and how stroke risk could be reduced through effective treatment.

Find out more

Half of Americans unaware of AFib

In a survey of over 1,400 Americans, one in two adults were unaware of the most common heart rhythm condition that increases stroke risk by 500%. Of those people who have Afib, less than half know about this stroke risk.

Read more


Sign Against Stroke

Join us in an international effort to prevent serious or devastating stroke by making AFib a healthcare priority; Sign Against Stroke.

How AFib can lead to stroke

Latest from Sign Against Stroke


1 Mission 1 Million

The 1 Mission 1 Million (1M1M) initiative  is going from strength to strength to support advancements in AFib-related stroke prevention. Sign the petition or join the discussion on Twitter #AFmission.

The aim is to get one million signatures from across the globe to raise awareness of AFib as a serious condition to health organizations all over the world.


Forum change - HealthUnlocked replaces AF Yahoo forum

Through recent and on-going issues with access to our Yahoo Forum, AF Association has made the difficult decision to replace Yahoo with a new forum – HealthUnlocked. AF Association HealthUnlocked is free to join and messages are published immediately on posting.

Join the AF Community


As a non-profit organization, we greatly rely on your donations to help us continue our work of raising awareness and providing information, support and access to established, new or innovative treatments for AFib. All donations are tax deductible, and easy to secure. Thank you so much for your support. For more information, please contact, info@afa-us.org

AFA-US is affiliated to AFA International, a global charity based in the UK. Some materials on this site are shared with AFA-UK.

AFA-US is also affiliated to STARS-US, a US registered non-profit organization 501© (3) charity, committed to improving the quality of life for individuals and their families coping with Syncope conditions.

What is AF?

AFA Toolkit for Medical Professionals.