Summary
Dioxin science has evolved rapidly
- More data -? better understanding, but more questions
Expanded human data on cancer – reinforces previous concern for potential human health impacts
Identification of non-cancer effects in animals and people - sufficient to generate a similar level of concern to cancer
Environmental levels and human exposure are declining
- Still at level of concern
Current source characterization – complex
- Uncontrolled burning and reservoir sources – potential significant role