Toxic PFAS, a “forever chemical,” will not break down in the environment for tens of thousands of years. The U.S. Centers for Disease Control and Prevention (CDC) list a multitude of health effects associated with PFAS exposure, including cancer, liver damage, decreased fertility, and increased risk of asthma and thyroid disease. These chemicals are certainly in the blood of humans, although the “experts,” many funded by Big Chemicals, are somewhat coy about the extent. However, we can gain some indication of this by the fact that these forever chemicals are now found in animal species from insects to whales, so they are everywhere. As these chemicals are a vital part of industrialism and manufacturing, they are here to say, and progress in finding alternatives is slow, because it is expensive. Simply add that issue to the list of existential threats as more is pumped out all the time.
https://www.theguardian.com/environment/2023/feb/22/animal-toxic-pfas-contamination-study