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Atrial Fibrillation Health Center

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Atrial Fibrillation - Cause

Atrial fibrillation is a problem with the heart's electrical system.

When something goes wrong with this system, it's usually because of other health problems that are causing wear and tear on the heart or making it hard for the heart to do its job. Sometimes it's because of lifestyle habits—such as smoking or heavy drinking—that are hard on the heart.

Recommended Related to Atrial Fibrillation

Does Alcohol Cause AFib?

A glass of wine with dinner is good for your heart, right? Many studies suggest that light or moderate drinking can cut your risk of heart disease and stroke. But drinking certain kinds of alcohol every day can raise your chances of getting atrial fibrillation (AFib), a heart condition that makes your heart beat really fast and off-rhythm. AFib can lead to blood clots, stroke, heart failure, and other heart conditions. So it's important to weigh the risks. Talk to your doctor about your health...

Read the Does Alcohol Cause AFib? article > >

Problems that affect the heart's structure

Atrial fibrillation is often caused by a health problem that directly affects the heart, including:

Other health problems

Atrial fibrillation can also be caused by other health problems, including:

  • Hyperthyroidism.
  • Lung disease, such as COPD.
  • Having heart surgery or other open-chest surgery.

Atrial fibrillation caused by a condition that is treatable, such as pneumonia or hyperthyroidism, often goes away when that condition is treated.

In some cases, doctors cannot find the cause of atrial fibrillation.

WebMD Medical Reference from Healthwise

Last Updated: /2, 14 1
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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