Key Takeaways

Fish oil supplements in high doses can increase the risk of atrial fibrillation.

Eating fatty fish like salmon or sardines is better for heart health than supplements.

Fish oil supplements don’t help everyone.

While omega-3 fatty acids in fish oil can lower triglycerides and may support heart health, high doses have been linked to a higher risk of atrial fibrillation (AFib) . People with AFib have an increased risk of stroke, blood clots, and heart failure.

What Does Research Say About Fish Oil and Heart Health?

For patients with heart disease, fish oil supplements can reduce inflammation and improve heart function. However, a meta-analysis shows that taking one gram or more of omega-3s per day is linked to a 49% increased risk of AFib.

A typical fish oil suppl

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