"Most of the fish sold in supermarkets and fish stores in New Jersey contain more mercury than the federal government expects, say the authors of a new study. The study tested commercial fish statewide and found tuna was most contaminated with mercury and flounder was the safest fish for the money.
The mercury level found in croaker bought in New Jersey was three times the FDA estimate. The |level found in fresh tuna was up to twice as high as the federal government expects. Besides flounder, the fish with the lowest levels of mercury included whiting, porgy and cod. Salmon was not tested because research already has established that wild salmon is comparatively low in mercury.
Mercury is most dangerous to developing fetuses and small children, in whom it can cause developmental delays and lower intelligence. Adults who eat large amounts of certain fish, such as shark, tuna, mackerel and swordfish, may suffer nerve damage, memory loss and fatigue. The researchers argue that it's time for the state to step in with up-to-date information about what types of fish available in local stores are best for health. Their study was published in the March edition of Environmental Health Perspectives.
It didn't matter where the fish was bought - at the supermarket or the fish store, in rich towns or poor, or in northern, central or southern New Jersey, the study found. Flounder bought at the Shore had more mercury than flounder elsewhere, probably because it came from local waters, but it was still safer than other species."
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