Last month the Environmental Working Group (EWG), a research and advocacy organization, reported results of a study that found excessive levels of PCBs, organic pollutants once used as industrial insulators, in samples of farmed salmon bought in Washington, D.C., San Francisco and Portland, Ore. The amounts detected were 16 times higher than those found in wild salmon. PCBs have been banned in the United States since the late 1970s because exposure poses a cancer risk.
The EWG findings aren’t the first on PCBs in farmed salmon. A study reported last year in the journal Chemosphere found the level of PCBs in farmed salmon in the U.S. and Canada to be five to 10 times higher than those in wild salmon. According to the EWG study, PCBs in wild salmon are about five parts per billion, compared to about 27 parts per billion in farmed salmon. Those numbers are far below the 2,000 parts per advertisement
billion permitted by the Food and Drug Administration (FDA) but well above guidelines set by the Environmental Protection Agency (EPA) of four to six parts per billion.
In addition to PCBs, farm-raised salmon also contained residues of antibiotics and other drugs used to treat diseases that occur in the unnatural, crowded conditions of the pens. They’re also artificially colored pink and generally have less omega-3 fatty acids in their tissue than their wild counterparts.
The big advantage farmed salmon has over wild is its availability and lower cost to the consumer. You definitely want omega-3 fatty acids in your diet on a regular basis, and oily fish are one of the best sources. My advice: forget about farmed salmon and splurge occasionally on wild Alaskan salmon. You can get the same omega-3 fatty acids found in salmon from sardines, herring and mackerel, as well as from walnuts and flax seeds.
The EWG findings aren’t the first on PCBs in farmed salmon. A study reported last year in the journal Chemosphere found the level of PCBs in farmed salmon in the U.S. and Canada to be five to 10 times higher than those in wild salmon. According to the EWG study, PCBs in wild salmon are about five parts per billion, compared to about 27 parts per billion in farmed salmon. Those numbers are far below the 2,000 parts per advertisement
billion permitted by the Food and Drug Administration (FDA) but well above guidelines set by the Environmental Protection Agency (EPA) of four to six parts per billion.
In addition to PCBs, farm-raised salmon also contained residues of antibiotics and other drugs used to treat diseases that occur in the unnatural, crowded conditions of the pens. They’re also artificially colored pink and generally have less omega-3 fatty acids in their tissue than their wild counterparts.
The big advantage farmed salmon has over wild is its availability and lower cost to the consumer. You definitely want omega-3 fatty acids in your diet on a regular basis, and oily fish are one of the best sources. My advice: forget about farmed salmon and splurge occasionally on wild Alaskan salmon. You can get the same omega-3 fatty acids found in salmon from sardines, herring and mackerel, as well as from walnuts and flax seeds.