A lot us like to eat wild salmon, probably because of the very low PCB content.....
The risk to your health is far greater by not eating either famed or wild salmon than by consume either of them. The truth of the matter is that there are small amount of PCBs all over the world. PCBs are lipophillic (like to bind to fat) so they will concentrate in fat. The 2004 Hites study over exagerates the issue and creates a lot of unneccessary fear. The levels of contaminants found are less than 1/80th of the acceptable levels established by Health Canada. Thus, if you are that concerned about PCB levels that low then you should really be cutting out other more prone sources of PCBs like beef, milk, eggs, poultry and pork. If this still does not satisfy you then you could trim the fat from farmed salmon. It should be noted that the farmed salmon used in the 2004 Hites report were not trimmed of any fat.
Even if you do not decide to trim the fat from farmed salmon you are still better off eating it than not eating any salmon. Authors of these studies that claim that farm salmon is dangerous to your health also make the numbers (concentrations of contaminants) bigger than they actually are. Instead of using the commonly used ppm (parts per million) these authors use ppt (parts per trillion). When you report a number like 50,000 ppt to Joe Public he would tend to think that is a very high number, but in fact it is very, very, very small. Be careful of the use of units in reports because they can be misleading.
Statistically, you are at more risk of coronary heart disease (CHD) than cancer-related diseases due to PCBs in farmed salmon. The benefits of eating farmed or wild salmon with Omega-3 fatty acids far exceed any risk posed by PCBs. I would be more concerned with Type 2 diabetes (a much bigger concern in this country) than the extremely minimal risks posed by eating farmed salmon. Not even in the same ballpark.....Sorry. Even the World Health Organization agrees CHD is a much greater risk to your health (check out the rankings). A diet rich in Omega-3 fatty acids is a good place to start to help improve your health. This should really not be a farmed salmon vs. wild salmon issue. This is more of a public health issue. We should be not discouraging anyone from eating either farmed or wild salmon. That is totally the wrong direction in my opinion. In essence, the Hites study does more of disservice to public health than good. No wonder Suzuki hardly mentions it anymore. I like your recipe though.
http://jama.ama-assn.org/content/296/15/1885.fullhttp://www.hc-sc.gc.ca/fn-an/surveill/other-autre/fish-poisson/index-eng.phphttp://www.sciencemag.org/content/303/5655/226 (Hites study)