PFASs

PFASs, or per- and polyfluoroalkyl substances, are a group of manufactured chemicals that include PFOA, PFOS, GenX, and many others. They have been used since the 1940s in a wide variety of industrial and consumer products because of their resistance to heat, water, and stains. Examples of products that may contain PFASs include cookware, food packaging, cleaning products, and firefighting foam.

Due to their widespread use and persistence, PFASs are found in the environment, including soil, water, and air, as well as in the blood of humans and animals worldwide. This persistence means they do not break down easily and can accumulate over time.

Research has suggested potential links between PFAS exposure and various health issues, although more studies are ongoing to fully understand these effects. These potential health concerns include impacts on the immune system, thyroid function, and an increased risk of certain cancers. Regulatory agencies are increasingly focusing on PFASs, setting limits for their presence in drinking water and working to reduce their release into the environment.

Efforts are underway to find alternatives to PFASs in manufacturing and to develop methods for remediating contaminated sites. The detection and regulation of these "forever chemicals" remain a significant area of scientific and public health attention.