What concerns are there about dioxins and PCBs?
There are concerns regarding human exposure to dioxins and PCBs. They are widely dispersed and persist in the environment for long periods, and may accumulate in the fatty tissues of some animals and humans. Dioxins and PCBs are widespread in the environment at very low levels and everyone is exposed them. Dioxins are known to cause a wide range of toxic effects in laboratory animals. These effects may have consequences for human health.