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How much mercury is in salmon?

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Total mercury levels in the wild salmon tested were three times higher than in farmed, but total mercury intake from both types of fish was found to be lower than from many other foods. The study was funded by the Canadian fishing industry, which supplies much of the farmed salmon eaten in the United States. read more

When mercury enters aquatic resources, such as the water bodies that host wild salmon, bacteria initiate a chemical reaction that converts mercury to its toxic form, methylmercury. This is the form of mercury in wild salmon that raises health concerns. read more

A new study hints that eating too much—or the wrong kind—of salmon and tuna can also boost mercury levels. The Dietary Guidelines for Americans advise us to eat eight ounces of seafood a week (12 ounces a week for women who are pregnant). read more

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