A new study finds that large synthetic polymers, long considered too big to be harmful, can break down in the environment and release toxic byproducts that threaten human health.
Liza Gross reports for Inside Climate News.
In short:
- Scientists once believed large polymer molecules were too big to escape products or enter the body, leading to regulatory exemptions. New research shows they can degrade into smaller, toxic compounds.
- Researchers found that polymeric brominated flame retardants (polyBFRs), used in electronics, release harmful chemicals when they break down, causing developmental problems in zebrafish models.
- Despite industry claims of safety, experts warn that these findings highlight a major regulatory gap, with polymers escaping the scrutiny that applies to smaller, well-known toxic chemicals.
Key quote:
“This is really an in-depth study that took seven years from the idea to publication.”
— Arlene Blum, executive director of the Green Science Policy Institute
Why this matters:
Regulations meant to protect public health are failing to account for the hidden dangers of supposedly “safe” chemicals. As these polymers break down, they could be contributing to the rise in developmental disorders, hormone disruption, and other health risks — issues regulators urgently need to address
Read more: What is chemical recycling?
