Why People at Risk of Heart Disease May Want to Avoid Fish Oil

• New research finds that taking omega-3 supplements is associated with an increased risk of atrial fibrillation in people with a high risk of, or existing, heart disease.
• Experts say the relationship between using omega-3 supplements and heart health is complicated.
• Talk with your doctor about your risks and what is best for you.

While previous research found strong evidence that omega-3 fatty acids benefit heart health, this popular supplement may also carry a significant risk for some people.

According to a new analysis by the European Society of Cardiology, omega-3 fatty acid supplements are associated with an increased likelihood of developing atrial fibrillation (AFib) in people with high triglyceride levels.

Triglycerides are a type of fat found in the blood.

“Currently, fish oil supplements are indicated for patients with elevated plasma triglycerides to reduce cardiovascular risk,” study author Salvatore Carbone, PhD, of Virginia Commonwealth University said in a statement.

“Due to the high prevalence of elevated triglycerides in the population, they can be commonly prescribed,” he added.