PFAS mixtures more toxic than single compounds, suggesting higher danger

First-of-its-kind research highlights need for change to regulation, as humans almost always exposed to mixtures

Mixtures of different types of PFAS compounds are often more toxic than single chemicals, first-of-its-kind research finds, suggesting humans' exposure to the chemicals is more dangerous than previously thought.

Humans are almost always exposed to more than one PFAS compound at a time, but regulatory agencies largely look at the chemicals in isolation from one another, meaning regulators are probably underestimating the health threat.