Unpleasant story
The researchers recommend that farmed salmon bought in Toronto supermarkets (as well as those in San Francisco, Boston, London, Oslo London, Paris, Edinburgh and Frankfurt) not be consumed in quantities of more than one half to one meal a month. Eight ounces of uncooked fish constitutes one meal.
Farmed salmon bought in Vancouver supermarkets (along with those in London, Washington D.C., Seattle, Chicago and New York) should not be eaten in more than two meals per month.
People who can consume more than the recommended amounts, which are based on strict guidelines established by the U.S. Environmental Protection Agency, could slightly increase their risk of developing cancer later in life. The same guidelines allow wild salmon to be consumed in quantities of up to eight meals per month.