US researchers at the Hite Laboratory at Indiana University analysed levels of chemical flame restardants (PBDEs) in 700 farmed and wild salmon collected around the world.
Researchers claim they found much higher levels of chemical flame retardants in farmed salmon compared to wild.
This study was funded by the aggressively anti-industry US environmental group the Pew Charitable Trusts, which was behind the dioxin level scare at the start of the year.
Brian Simpson, SQS chief executive, said: “This is yet another example of the tactics being used by wealthy US anti-Scottish salmon farming campaigners to scare the public.
"The FSA has recently given clear advice - taking into account PBDEs. Eating two portions a week of oily fish is good for everyone. Four a week is even better for boys, men and older women.”