What is atrial fibrillation?

Doctor listening to mans heart

Atrial fibrillation (AF) is the most common heart rhythm disturbance in the UK, affecting around one million adults. In AF, the normal regular electrical impulses of the heart become disorganised, leading to an irregular heartbeat. Find out more about the condition.

Please register to continue to use this site

  • If your employer has signed up to our online wellbeing services, you will enjoy unlimited access.

  • If your employer has not signed up to our online wellbeing services, you will be able to access two articles. Access to the financial support section, counselling, and critical incident resources is unlimited.

Register to continue

If you wish to access further support please call our freephone helpline on 0808 801 0808 and speak to one of our advisors.

All of your personal information is completely confidential and is not shared with anyone, including your employer.