Fish Oil, Vitamin D Won’t Prevent A-Fib: Study

By Robert Preidt
HealthDay reporter

THURSDAY, March 18, 2021 (HealthDay News) – For people wanting to prevent the heart rhythm disorder called “a-fib,” new research shows that taking vitamin D or fish oil supplements won’t help.

A-fib, also known as atrial fibrillation, affects more than 33 million people worldwide and is the most common type of abnormal heart rhythm. It can cause symptoms that affect a person’s quality of life, lead to blood clots that can lead to stroke, and lead to heart failure.

For the study, researchers looked at whether taking supplements of vitamin D or omega-3 fatty acids found in fish oil could affect different types of fibromyalgia and whether some patients would be more likely to benefit or from it. be harmed by the supplements.

Overall, the results were generally consistent across different types of a-fib and patient groups, according to lead author Dr. Christine Albert and her colleagues. Albert is chair of the cardiology department at the Smidt Heart Institute in Los Angeles.


The study, published on March 16 in the Journal of the American Medical Association, follows a presentation by Albert at an American Heart Association conference last year.

“Our recommendation remains the same,” she said in a JAMA Network press release. “We do not support taking fish oil or vitamin D supplements to prevent atrial fibrillation.”

However, “unlike other recent trials which found increased risk of atrial fibrillation with higher dose omega-3 fatty acid supplements, our study did not find a significantly increased risk of atrial fibrillation with higher dose omega-3 fatty acid supplements. gram of fish oil per day, which is good news for people taking low-dose fish oil for other health concerns, ”said Albert.

His team also found that vitamin D supplements at a rate of 2,000 international units per day did not increase the risk of fibromyalgia.

More information

The US National Heart, Lung, and Blood Institute has more information on atrial fibrillation.

SOURCE: JAMA Network, press release, March 16, 2021

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