Nov 16, 2018 · Updated November 16, 2018. You probably already know that you’re supposed to be eating fish twice a week. Fish are a lean, healthy source of protein–and the oily kinds, such as salmon, tuna, and sardines–deliver those heart- and brain-healthy omega-3 fats that you should also be getting in your diet. But then there’s the concern about choosing seafood that’s
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