TIME: Fish Oil Is Hugely Popular—But Should You Take It?

For years, the studies mostly supported the idea that omega-3s are beneficial to the heart. But some recent research has a more mixed message. “There’s been a lot of confusion, because lately some studies have shown that omega-3 doesn’t seem to help,” says Dr. James O’Keefe, chief of preventive cardiology at Saint Luke's Mid America Heart Institute.

Dr. O'Keefe helps settle the score when he talks to TIME. Read the full article, here.