Toxic Organic Pollutants Impact

Toxic organic pollutants such as polycyclic aromatic hydrocarbons, dioxins, and flame retardants are synthetic or combustion-derived compounds that resist breakdown in the environment and accumulate through food chains, reaching concentrations in human and animal tissues that can disrupt cellular signaling, damage DNA, and interfere with development. Much of the concern centers on how these compounds activate the aryl hydrocarbon receptor, a protein that regulates gene expression in ways linked to cancer, immune dysfunction, and reproductive harm. Researchers are working to clarify the risks posed by chronic low-level exposures and by the mixtures of pollutants people encounter simultaneously, rather than single compounds tested in isolation. Open questions include how emerging organophosphorus flame retardants behave over time compared to the brominated variants they replaced, and whether current regulatory thresholds adequately protect populations with heightened vulnerability, such as developing fetuses and subsistence communities with high dietary exposure.

Works

106,824

Total citations

2,423,753

Keywords

Polycyclic Aromatic HydrocarbonsBrominated Flame RetardantsAryl Hydrocarbon ReceptorOrganophosphorus Flame RetardantsDioxins and Dioxin-Like CompoundsBioaccumulation