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The Best Fish You're Not Eating

We're talking about: Atlantic mackerel
Why you should eat more of it: This high-protein, heart-healthy fish also has calcium, iron, the antioxidant coenzyme Q10, and it's low in mercury, says Alexandra Sowa, MD, a clinical instructor of medicine at Weill Cornell Medical College, in New York. Having fish like it on hand can help you reach the Food and Drug Administration's recommended 12 ounces of fish or shellfish per week.
Keep this in mind too: You can still eat tuna (which is higher in mercury than Atlantic mackerel) if you choose your go-to variety wisely—opt for skipjack tuna and canned chunk-light tuna over yellowfin and canned albacore, per the National Resource Defense Council. (As a general rule, limit intake of moderate- and high-mercury fish to 3 to 6 servings per month.)