Several recent news reports about farmed salmon
have incorrectly conveyed the recommendation of the World Health
Organization (WHO). They have stated that WHO reviewed new data on
levels of dioxins in salmon and subsequently lowered its
"recommended daily intake of salmon." This needs to be
clarified.
WHO has never recommended a daily intake for
salmon. Furthermore, WHO has not received or reviewed the purported
data showing higher levels of chemicals, including dioxins, in farmed
salmon compared to wild varieties.
In 1998, WHO lowered its recommended Tolerable
Daily Intake (TDI) of dioxins and related compounds such as,
dibenzofurans and dioxin-like polychlorinated biphenyls (PCBs), to 1 -
4 picograms/kilogram body weight from 10 picograms/kilogram body
weight. This reduced recommended TDI was based mainly on new
information on the toxicity of these compounds, rather than on
exposure considerations.
WHO will again examine the safety of dioxins and
related compounds when the Joint United Nations Food and Agriculture
Organization/WHO Expert Committee on Food Additives (JECFA) meets in
June 2001. JECFA welcomes the submission of any data on dioxins in
food, including farmed and wild salmon, for evaluation by the JECFA
experts.