Investigation: Chemical Industry Knew About Microplastics Risks 50 Years Ago

The LA Times obtained internal memos showing chemical companies were aware of possible microplastic contamination in human organs as far back as 1974. The report follows a Nature study suggesting microplastics are not chemically inert and can cause biological damage.

• 1974 research showed PVC particles reached animal organs within two hours
• A 1975 Union Carbide letter dismissed the findings as a 'horror story'
• Nature study links microplastics to reactive oxygen species
• American Chemistry Council denies the industry stayed silent on risks