Why are PFAS chemicals called "forever chemicals"; how does this class of chemicals distinguish itself in terms of longevity?
PFAS, or per- and polyfluoroalkyl substances, are called "forever chemicals" due to the fact that they do not break down easily in the environment or in our bodies. This class of chemicals can resist natural degradation mechanisms due to the strong fluorine-carbon bond, which makes them highly stable and non-reactive. In fact, it is estimated that PFAS can take hundreds or even thousands of years to fully degrade in the environment.
This longevity poses a serious concern for the environment and human health, as PFAS can accumulate in the food chain and persist in our bodies, potentially causing harmful health effects. The use of PFAS in industrial and consumer products has been widely restricted, but some uses are still allowed, leading to continued contamination of the environment and implications for public health.