The presumption of “safe until proven otherwise,” which governs the way we license new chemicals and foods, has caused and continues to cause immense damage until it is overturned. Researchers at the University of California and the University of Colorado’s Anschutz Medical Campus have uncovered that DuPont and 3M were aware for nearly half a century that their PFAS (per- or poly-fluoroalkyl substances) products are highly toxic. Internal documents reveal they withheld safety data, suppressed unfavorable research, and distorted public discourse to conceal the dangers.
By the 1960s, DuPont’s internal reports acknowledged PFAS toxicity in animals, warning of liver damage in rats and cautioning against skin contact with Teflon. A 1970 memo from the Haskell Laboratory, funded by DuPont, labeled C-8 as “highly toxic when inhaled” and “moderately toxic when ingested.” By 1980, reports linked C-8 to birth defects among female employees, yet DuPont reassured workers it was “like table salt.” A 1991 press release dismissed concerns about groundwater contamination, claiming C-8 had “no known toxic or ill health effects in humans at concentration levels detected.”
In the early 2000s, after lawsuits and media scrutiny, DuPont sought EPA reassurance that Teflon products were safe, only to face a $16.5 million fine for withholding internal findings. Despite this, PFAS profits reached $1 billion for DuPont alone that year. The scale of harm caused by DuPont and 3M dwarfs other corporate scandals, with PFAS—known as “forever chemicals”—now pervasive in plastics, cosmetics, and even microplastics found in Swiss snow.
Recent studies highlight PFAS’s role as endocrine disruptors, linked to plummeting sperm counts, birth defects, and miscarriages. A Singapore study found PFAS exposure could reduce women’s chances of conception by 40%. While lawsuits against DuPont and 3M mount, with liabilities exceeding $140 billion, the broader issue remains: how to address chemicals that persist in the environment and human bodies for generations.
The “safe until proven otherwise” regulatory framework has enabled such crises, allowing harmful substances to replace one another without adequate scrutiny. Acetyl tributyl citrate, marketed as a safer alternative to phthalates, has been shown to impair neural development. Processed foods, laden with additives, are tied to rising rates of obesity, diabetes, and autism. Meanwhile, lab-grown meat, approved by the FDA without long-term safety data, raises further concerns.
Political figures like Robert Kennedy Jr. have called for regulatory reform, while Donald Trump’s proposed commission on chronic illnesses signals growing public scrutiny. Yet the path forward remains unclear, as corporate malfeasance and flawed oversight continue to shape public health. The need for systemic change—and accountability—looms large.