Key Takeaways

Sardines are a good and cheap source of heart-healthy omega-3s and other nutrients.

Fish oil supplements may not help your heart and could increase the risk of irregular heart rhythms.

Research shows that sardines are an inexpensive source of omega-3s and other heart-healthy nutrients like calcium, potassium, and magnesium. This type of fish might even make a better alternative to fish oil supplements.

Can Fish Oil Supplements Protect Your Heart?

While fish oil supplements are popular among U.S. consumers, there’s not much evidence to show that these supplements benefit heart health, said Deepak L. Bhatt, MD, MPH , director of Mount Sinai Heart in New York.

“In fact, it’s quite the opposite. There is data from large trials showing that they don’t provide any cardiov

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