Simple Blood Test Reveals If You Are At Risk for Atrial Fibrillation

A healthy heartbeat is important for protecting your heart and brain. Many people develop rhythm problems as they get older, and these issues can lead to serious complications if ignored. Some risks come from health conditions like high blood pressure, sleep apnea, or weight gain, while others are linked to age or family history. The good news is that many everyday habits can lower your chances of developing heart rhythm problems and help you stay healthier as you age.

Up to 6.1 million Americans have atrial fibrillation (AF), an irregular heartbeat that can lead to blood clots, heart failure and increased risk for death from cardiovascular causes. Having AF quintuples risk for stroke and doubles it for heart attack or dementia. Although early detection and treatment can help save lives, this dangerous disorder often goes undiagnosed until the patient has suffered serious complications, such as a stroke.

AF, which is most common in older adults, is potentially preventable, often with simple lifestyle changes. Discuss your risk for AF with your medical provider and ask about a simple blood test that checks for a genetic variant that greatly increases the likelihood of developing AF.

Here’s a closer look at the test, key BaleDoneen Method takeaways, and tips on preventing AF.

What does the blood test check for?

Available at medical labs all over the U.S. if ordered by a medical provider, the blood test checks to see if you are a carrier of the 4q25 genetic variant. Compared to noncarriers of this gene, those who have it are at 140% higher risk for AF and 130% higher risk for strokes caused by blood clots originating in heart arteries (cardiothrombotic stroke). About one in three people carry the 4q25 genetic variant.

Who should get this genetic test?

Based on recent studies, the BaleDoneen Method recommends the test for patients with any of these red flags for increased risk of developing atrial fibrillation:

• Diabetes
• Obesity and/or poor cardiovascular fitness
• A resting heart rate above 84 beats per minute
• Obstructive sleep apnea
• High blood pressure
• Chronic obstructive pulmonary disease (COPD)
• Rheumatoid arthritis
• Low levels of magnesium and/or potassium
• Thyroid disorders
• Kidney disease
• A family history of AF
• Use of alendronate (a medication for osteoporosis sold under such brand names as Fosamax and Binosto)
• Having an ischemic (clot-caused) stroke, particularly if the cause was unclear
• Advanced age (AF is most common in people ages 65 and older)

What can I do to reduce my risk for getting atrial fibrillation?

The same strategies that help keep your heart healthy can also reduce your risk for AF, such as exercising regularly, maintaining a healthy weight, avoiding all nicotine use or exposure, and managing high blood pressure. Reducing your systolic reading (the top number) below 130 mmHG has been shown to cut risk for AF by 30%, compared to a reading above 142 mmHG. For people with particularly high risk for atrial fibrillation, medications may be advised, along with lifestyle modification.

In a recent study of older adults, those with the highest levels of Omega-3 fatty acids in their blood had a 39% lower rate of AF, compared to people the same age with the lowest levels. Omega-3 fatty acids are found in oily fish (such as salmon, tuna, lake trout, sardines and herring), nuts, flax seeds, vegetable oils and leafy green vegetables. If your levels of Omega-3 are low, ask your medical provider if a supplement is appropriate for you.

In another recent study of adults age 55 and older, those who followed a Mediterranean diet that included 50 grams (about 4 teaspoons) of extra-virgin olive oil daily had a 38% reduction in their rate of AF, compared to a control group. The BaleDoneen Method recommends a diet based on your DNA as one of the best ways to reduce your risk for heart attacks, strokes and other cardiovascular events.

Studies vary about the effects of drinking coffee, with most research finding that a daily intake of two to three cups is safe and either neutral or beneficial in protecting against AF and stroke. Coffee consumption is also linked to lower risk for diabetes, high blood pressure, obesity and depression in many studies.

However, some people carry a variant of the CYP1A2 gene that makes the body metabolize caffeine slowly. In this group, drinking coffee may be harmful to heart health. For example, a study of moderate and heavy drinkers of coffee found that the slow metabolizers were much more likely to develop high blood pressure than rapid metabolizers. A more recent study found that people with the “slow” version of the CYP1A2 gene who are moderate or heavy drinkers of coffee are more likely to develop elevated blood sugar than those with the “fast” version.

What Raises the Risk for Atrial Fibrillation?

Atrial fibrillation (AF) affects millions of adults, especially as they get older. It is an irregular heartbeat that increases the chances of blood clots, stroke, and other heart problems. Many people do not know they have AF until a serious event happens. That is why understanding your personal risk is so important. Both lifestyle habits and medical conditions can increase the chances of developing AF.

Some risks cannot be changed, such as age or family history. These are called non-modifiable risks. Others can be improved through healthy habits. These are called modifiable risks. By focusing on what you can control, you can greatly lower your chances of developing AF.

Modifiable Risk Factors for Atrial Fibrillation

Several lifestyle habits and health conditions can raise AF risk, but you can improve many of them.

Obesity and Atrial Fibrillation Risk

Being overweight puts extra pressure on your heart. It also causes inflammation in the body, which increases the chance of AF. Losing even a small amount of weight can help your heart work better and reduce your risk.

Sleep Apnea Atrial Fibrillation Risk

Sleep apnea is a major cause of heart rhythm problems. When breathing stops repeatedly during sleep, it stresses the heart. Treating sleep apnea with a CPAP machine or lifestyle changes can lower your AF risk.

High Blood Pressure

High blood pressure makes the heart work harder. This extra pressure can damage the heart’s electrical system. Keeping your blood pressure below 130 mmHg can lower AF risk by up to 30%.

Smoking and Nicotine

Using nicotine or being around secondhand smoke increases heart strain. Quitting smoking is one of the best steps you can take to protect your heart.

Poor Fitness

Regular exercise keeps the heart strong and reduces inflammation. Even simple daily walks can lower AF risk.

Low Levels of Magnesium or Potassium

These minerals help the heart maintain a steady rhythm. Low levels can cause heart rhythm problems. Eating leafy greens, nuts, fruits, and vegetables can help.

Non-Modifiable Risk Factors for Atrial Fibrillation

Some risks cannot be changed, but knowing them helps you stay alert.

Age

AF is most common in adults over 65.

Family History

If a close family member has AF, your risk is higher.

Genetic Factors

Some people carry genetic variants such as the 4q25 variant that greatly increase AF risk. A simple blood test can help detect this.

Preventing Atrial Fibrillation Risk

Simple lifestyle changes can help protect your heart:

• Maintain a healthy weight
  
• Treat sleep apnea
  
• Keep blood pressure under control
  
• Exercise regularly
  
• Avoid nicotine
  
• Eat a heart-healthy diet
  
• Increase Omega-3 fatty acids through fish, nuts, and seeds
  
• Follow a Mediterranean-style diet
  
• Limit caffeine if you have a slow-metabolizing gene variant
  

These steps also help reduce stroke risk, which is one of the most serious complications.

FAQs

What is the main risk for atrial fibrillation?

The main risk is age, especially being over 65, but conditions like high blood pressure, obesity, and sleep apnea also play a big role.

What is the main cause of atrial fibrillation?

Most cases are caused by high blood pressure, heart disease, or long-term strain on the heart.

Can sleep apnea lead to atrial fibrillation?

Yes. Sleep apnea is one of the strongest triggers for AF because it stresses the heart during sleep.

What health conditions increase atrial fibrillation risk?

High blood pressure, obesity, diabetes, thyroid problems, sleep apnea, and heart disease all raise AF risk.