Keep smaller fish to eat (regulations permitting) and let the big ones go. Avoid eating fish parts other than fillets. Trim fat from fillets and/or use cooking methods that allow fat to drip away.

Tuna is a widely eaten species of fish. However, canned tuna is often the most common source of mercury in the diet. Recommendations for how often a person should eat canned tuna can vary ...

Fish that are predatory, i.e., eat other fish, are more likely to have higher mercury levels. This includes tuna, mackerel, and swordfish, however, feeding small amounts of these fish infrequently ...