PFAS (Per- and Polyfluoroalkyl Substances) are a large group of human-made chemicals used in various industrial and consumer products since the 1940s. Known for their resistance to water, oil, and heat, PFAS have been utilized in non-stick cookware, stain-resistant fabrics, food packaging, firefighting foams, and many other applications. PFOS (Perfluorooctane Sulfonate) is one of the most well-known and studied compounds within the PFAS family.

Due to their slow degradation rates, these chemicals, often called 'forever chemicals,' can persist in the environment and our bodies for decades. This persistence raises concerns about their potential impacts on human health and the environment. However, it's important to note that these concerns have led to increased scrutiny and regulation by health organizations and governments worldwide, reassuring us that global efforts are underway to manage this issue.