A groups of substances that are useful to give plastics certain qualities. They are currently unregulated, and, due to their small size, found pretty much ever

A groups of substances that are useful to give plastics certain qualities. They are currently unregulated, and, due to their small size, found pretty much everywhere, including in our bloodstream. Several of them are "forever" substances that will take a very long time to break down. It's one of the reasons off-gridders are recommending not to drink unfiltered rainwater, even in climates where it was traditionally safe, because PFAS are found in dust. Dust forms the basis for raindrops. Scientists and the general public are starting to become concerned about these substances, and at least one preliminary study indicates they might interfere in the body's ability to react correctly to vaccines. More studies are needed, and given the potential for long-term effects, the studies might take a long time.