(HealthDay News) -- Mercury is found in many types of fish and shellfish. Because significant amounts of mercury can harm unborn babies and young children, women who are or may become pregnant, those who are nursing, and young children should avoid some kinds of seafood.

The U.S. Environmental Protection Agency offers these guidelines:

• Avoid eating fish that contain high levels of mercury, including swordfish, shark, king mackerel and tilefish.
• It's OK ...
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