No, Mercury isn't just that silver stuff in old-timey thermometers. Mercury is a naturally occuring element in the environment and can sometimes be found in your food — most notoriously in fish.

The FDA and EPA say most women and young children should avoid the first four highest-­mercury fish below. They're considering adding the last two to the list. If you are a frequent consumer of ...

Fish is often hailed as a nutritional heavy ... you should try to limit it to one to two times a week." Because of its high mercury content, it may need to be avoided by certain individuals ...

Will Lake Erie yellow perch remain safe to eat twice per week due to rising mercury levels? (Photo by John Hageman ...

Initial results from Harvard reveal high levels of mercury in the Madeira, although still below the limit recommended by Brazil’s authorities. Predatory fish species showed mercury levels above ...

But women who are or may become pregnant and nursing mothers should avoid eating fish that is high in mercury, such as shark, swordfish, and tuna, and should eat only up to 12 ounces of fatty fish ...

Anglers catching fish in zebra mussel-infested lakes may be reeling in adult walleyes with mercury content 72% higher and ...

and tilefish because samples of these fish had shown dangerously high levels of mercury contamination. But instead of thanking the FDA for the kind advice, environmental activists and consumer ...

Bluefin and bigeye tuna are also high in mercury. However, canned tuna contains less mercury than fresh tuna because the fish used for canning are smaller. The FDA recommends eating about two or ...

It's worth flagging that this fish may not be good for your health, said Wright. "Shark is very high in mercury, which is a neurotoxin. It should be avoided completely by pregnant women and children.