Researchers Baffled by Rising Mercury in Fish

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Lake Cochituate, photo/Wikimedia

Mercury emissions from major Massachusetts sources have declined by 90 percent over the past two decades, but mercury levels in the state’s freshwater fish holds stubbornly high, with many species too contaminated for pregnant women and children to eat, according to an article on

The inability to reduce mercury in fish to safe eating levels troubles environment and health officials — and added to that concern is growing evidence that some freshwater fish in similar northern latitudes, from the Great Lakes to Scandinavia, appear to have increasing mercury levels after years of decline.

Read about rising mercury levels in fish.