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3M Hid Evidence That PFAS 'Forever Chemicals' Were in Human Blood for Decades

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GoKawiil Brief

ProPublica reporter Sharon Lerner uncovered internal 3M records showing the company knew as early as the 1970s that PFAS compounds used in nonstick coatings, food packaging and stain-resistant products had entered people's bloodstreams worldwide. Rather than disclosing this, 3M kept the findings confidential for decades, according to a former company scientist who spoke with Lerner.

Why It Matters

GoKawiil's interpretation of the reporting above, not reported fact.

PFAS chemicals persist indefinitely in the environment and human body, and have been linked to cancer, thyroid disease, immune dysfunction and other serious health problems. The suppression of early internal data means millions of people were exposed for decades without knowledge or consent, fueling ongoing lawsuits, regulatory crackdowns and billions in corporate liability.

Key Takeaways
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Source: propublica.org — Jessica Lussenhop, 2026-09-05

Published there as: “How the Disaster of "Forever Chemicals" Was Kept Secret”

Read the original report → The summary and analysis above are GoKawiil's own, written from reporting by the source above. Facts and quotes belong to the original publisher.