Salmon have high levels of poisons

Rich in heart protective fats, salmon has become a favorite of the health conscious, there is such a high demand that they are being farmed around the world. The problem here is fish farms also breed toxins, a recent study the largest of its kind, revealed farmed salmon have high levels of poisons like PCBs and dioxins.
Scientist have studied more then 700 salmon, both wild and farmed from North America, South America, and Europe, looking for 14 organochliorines thought to cause cancer and birth defects. All 14 were found in North American and European farmed salmon and in higher amounts than in wild specimens.
The source of the toxins seems to be the food they feed them on the farms. Salmon are carnivorous and thus are fed meal and oil derived from smaller fish. Organochliorines are fat soluble, so trivial amounts in small plant-nibbling fish become concentrated in the fatty tissue of salmon.
To protect their children, women should avoid eating farmed salmon at all from the day they are born through menopause. Men on the other hand can safely eat wild salmon as often as eight times a month, but farmed salmon only once or twice a month. Salmon from farms in Scotland and the faeroe Islands are so contaminated; they should not be eaten more then three times a year.
This story was written on information gathered by Dr. David O. Carpenter Professor at the Environmental Health and Toxicology Division, School of Public Health at the University of Albany in New York.