as reported in Science News, January 24, 2004
High concentrations of chlorinated organic contaminants in farm-raised Atlantic salmon may warrant limiting consumption of the otherwise-healthful fish to no more than once per month, researchers say. They add that most wild-caught Pacific salmon can be eaten at least 2 or 4 times monthly without significantly increasing cancer risk.
Compared with wild salmon caught in the northern Pacific Ocean, salmon fanned in Europe and North America are signifi-cantly more contaminated with polychlorinated biphenyls (PCBs) and 13 other organic chemicals, report Ronald Hites of Indiana University in Bloomington and his colleagues, in the Jan. 9 Science News.
Salmon farmed in Chile contain PCBs and five of the other chemicals in higher average concentrations than wild salmon has, the study also found. The researchers base their dietary advice on cancer-risk assessments that the U.S. Environmental Protection Agency has made for four of the contaminants, including PCBs.
The U.S. government has not endorsed the con-sumption limits suggested by Hites’ team. Nobody has yet evaluated whether the cancer risks from contaminants outweigh the benefits derived from consuming salmon’s heart-helping fats, most notably the omega-3 fatty acids.
Hites and his colleagues used gas chromatography-mass spectromctry to analyze salmon samples culled from nearly 600 fish of various \vild and fanned varieties, plus 144 farm-produced fillets. The researchers also analyzed contaminants in commercial salmon feeds from Chile, Europe, and North America, since diet is the fish’s main source of chlorinated contaminants.
They found the heaviest contamination of both fish and feed in Europe. Rare 20 years ago, farmed Atlantic salmon now account for the majority’ of salmon available in supermarkets. Globally, more than 1 billion kilograms are farmed each year.
The solution is clear and is now available! The food supply (i.e. farmed or wild fish) is woefully deficicent of adequate levels of Omega-3 EFAs and, on top of that, it is now too contaminated to even come close to achieveing recommended daily intake levels to make a measurable impact on inflammatory disease conditions (even if they were clean and safe enough to eat, do you think you could consume the 2 lbs. of salmon a day it would take to provide your body with the minimum amount of Omega-3 EFAs it needs everyday?).
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