‘Forever Chemicals’ Persist for Decades, Study Finds

A study published in the Journal of Applied Toxicology has revealed the long-term persistence of Per- and Polyfluoroalkyl Substances in seabird populations. Researchers analysed eggs of Northern Gannet in Canada over a 55-year period to track contamination trends.

Among 17 PFAS compounds studied, Perfluorooctane Sulfonate was the dominant contaminant, peaking in the mid-1990s before gradually declining following regulatory restrictions. However, levels remained above thresholds linked to reproductive harm for decades.

The study also highlighted the extreme persistence of these chemicals, with Perfluorooctanoic Acid showing an environmental half-life of up to 51 years.

Although regulations have reduced exposure, the slow breakdown of PFAS means contamination lingers. Researchers stress the need for continued monitoring and sustained regulatory efforts to manage long-term environmental and health risks.

16-04-2026