"The group tested 10 types of fish oil for PCBs and found extreme differences in the amount of PCB each contained. Some had very low levels; while others contained significantly higher levels. "Consumers who want the health benefits of fish oil shouldn't also have to take the health risks of an extremely toxic man-made chemical," said David Roe, one of the attorneys for the plaintiffs. "And they don't have to, since preliminary test results show that some fish oil brands have only 1/70th as much PCB contamination in them as others." The capsules that showed the highest overall levels of PCB compounds were Now Foods Salmon Oil, Now Foods Double Strength Cod Liver Oil, Now Foods Shark Liver Oil, and Nature Made Cod Liver Oil. The fish oil that contained the least amount of PCB were Nature Made Odorless Fish Oil, TwinLab Norwegian Cod Liver Oil, TwinLab Emulsified Norwegian Cod Liver Oil, Solgar 100% Pure Norwegian Shark Liver Oil Complex, and Solgar Norwegian Cod Liver Oil." Perhaps this is one of the reasons Cheney's testing suggested that fish oil supplements were 'toxic'? http://www.sfgate.com/cgi-bin/blogs/sfmoms/detail?entry_id=58320 d.