I beg to differ.....
Logic dictates that if the average North American's current intake ratio of Omega 6 to 3 is 30:1 and they eat farmed salmon that has an Omega 6 to 3 ratio of 1:2, then they have not improved their intake ratio at all, no matter how much farmed salmon they eat! And with the trend of substituting processed grains for fishmeal, the level of Omega 3 in the feedlot salmon will continue to decrease.
On the other hand if you eat wild salmon which has an Omega 6 to 3 ratio of 1:19, depending on the quantity of wild salmon you eat, you can dramatically improve your intake ratio.
The main selling point of the fish feedlot business is "eat farmed salmon because it is high in Omega 3 and the benefit of Omega 3 outweighs the fact that the farmed stuff is high in PCB's". That is false.
The truth is the Omega 3 in farmed salmon is not high enough to make any difference to a person's health and eating farmed salmon puts you at higher risk of adding to the PCB's we are already ingesting with other foods we eat.
Well you can differ, but you are still wrong and being duped. Of course there are Omega-3 benefits from eating farmed salmon. As you can see from the reports I posted there is definitely benefit.
That ratio of 30:1 has more to do with North Americans eating foods that are not as good for them – like processed foods as you already mentioned. That’s the real problem – not farmed salmon. North Americans eat too much saturated fat, salt and sugar. They are getting that from the processed foods and fast foods. How does farmed salmon with a ratio of 1:2 compare to 30:1?
Sorry, but the benefits of Omega-3 in farmed salmon outweigh the risks associated with PCBs. Look at the last study I posted: http://salmonfarmscience.files.wordpress.com/2012/02/health_2006_fish_intake_contaminants_and_human_health.pdf
It’s not even close. You are so far out of the ballpark with your beliefs on this. For instance, the levels of PCB found by Hites et al 2004 were 1/80th of the acceptable limits established by Health Canada. If you read the study from the Journal of the American Medical Association, your risk of coronary heart disease is substantially higher than any risk from cancer from PCBs in farmed fish. Check with the EPA and the American Heart Association to see which is risk is worse. The reduction in the risk of CHD (a much bigger public health threat) is improved substantially more by eating farmed salmon than the risk of cancer from people eating farmed salmon. Per 100 000 individuals, consumption of farmed vs wild salmon would result in 24 vs 8 excess cancer deaths, respectively, while consumption of either farmed or wild salmon would result in 7125 fewer CHD deaths (Foran et al 2005; reference in the JAMA study). Your cancer fears from farmed salmon do not match reality, AF. More people in this country will die from CHD than from PCBs related cancers. You might want to try finding where PCB related tumours have been found sometime. They have been found in rodents – not humans. Fact is that the major sources of any PCBs or dioxins are with meats and dairy products – not farmed salmon. Don’t take my word for it – look it up.
The truth is that the Omega-3 in farmed salmon is high enough to make a difference. People should be more focused on the benefits of Omega-3 from farmed salmon than some ratio that is not even close to the 30:1. People should be more focused on saturated fats, sugar and salt. People should be focused more on the nutrition label on the food they buy instead of getting hung up on a ratio. To avoid the 30:1 ratio you mention, people need to make changes to their gluttonous diets by incorporating more foods with Omega-3 fatty acids which are found in both farmed and wild salmon. Pitting one against the other is wrong. It is much better trade-off to eat farmed salmon than not at all and that is fact. Read the links I posted. Instead of harping on the disadvantages of farmed salmon, critics should really be encouraging people to start eating more seafood (whether it is farmed or wild salmon) and getting them to eat less of the foods that are higher in saturated fats, sugar and salt.
In my opinion, a person should really only worry about contaminants in seafood in certain situations where areas have local health advisories. Environmentalists against salmon farms who try to persuade the consumer away from farmed salmon are actually doing more harm than good. However, a "pro-fear mongering politician" like you can never resist.