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Recycled Polyethylene Leaches Over 80 Chemicals and Disrupts Zebrafish Hormonal Balance

This study will inform August treaty negotiations in Geneva to eliminate toxic additives from plastic products

Overview

  • Researchers found that single pellets of recycled polyethylene released a complex mix of more than 80 chemicals into water within 48 hours of leaching tests
  • Zebrafish larvae exposed to the leachate for five days showed marked increases in gene expression tied to lipid metabolism, adipogenesis and endocrine regulation
  • Chemical profiling detected both common plastic additives such as UV-stabilizers and plasticizers and contaminants like pesticides, pharmaceuticals and biocides
  • Lead investigators warn that undisclosed toxic substances in recycled plastics may pose risks to human reproductive health, child development and metabolic disorders
  • The study bolsters calls for a ban on hazardous plastic additives and full transparency across recycling supply chains ahead of the Global Plastics Treaty