Despite NAS Critique, Draft EPA Dioxin Study Tracks Prior Risk Estimates

摘要

EPA has crafted a draft assessment of the risks posed by dioxin that largely tracks the risk estimates EPA adopted in a 2003 version of the study, despite calls from a National Academy of Sciences (NAS) panel for EPA to significantly revise its earlier assessment, EPA and government sources say.rnThe 2006 NAS report urged EPA to reconsider its finding that dioxin is a human carcinogen, suggesting that EPA had overstated dioxin's cancer risk. The report urged EPA to consider less-conservative non-linear as well as linear modeling of dioxin's cancer risks.