Terms: swordfish
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• Science > Ecology > Water Conservation
• Social Studies > Current Events > Health

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1. High Levels of Mercury Found in Fish (Fox News)
   "The federal government advises pregnant women, nursing mothers and young children to avoid fish with high levels of mercury — shark, swordfish, king mackerel or tilefish. Elevated mercury levels have been linked to learning disabilities and developmental delays in children and to heart, nervous system and kidney damage in adults."
   
   "A supermarket industry group said it was not surprised by the survey, because swordfish and tuna are known to have higher levels of mercury. Many stores already offer brochures or have signs, the group said." 9-05

2. Study: Fish and Mercury (CNN News)
   "Having mercury levels that are too high isn't someone else's problem. In a recent study from the Centers for Disease Control and Prevention, one out of 17 women of childbearing age in the United States has mercury in her blood above the level that could pose a risk to a developing fetus (5.8 micrograms per liter). So the federal government advises pregnant women and those thinking of becoming pregnant to avoid certain fish, such as shark, swordfish and fresh tuna, usually found in fish markets and sushi. Canned tuna seems to be less of a threat, but the U.S. Department of Agriculture says consumption should be limited."
   
   "Why avoid these kinds of fish? According to Andrew Heyes, a scientist with the Smithsonian Environmental Research Center, Edgewater, Maryland, the older and larger the fish, the more mercury it has stored. 'As it grows older, it can't eliminate mercury as fast as it takes it in," he says. 'So there's an accumulation in the fish.' " Safer fish are salmon, cod, tilapia, and haddock. 04-09