PFAS, or per- and polyfluoroalkyl substances, are a group of man-made chemicals used in various products for their water- and grease-resistant properties. They are commonly found in items like non-stick cookware, water-repellent clothing, and food packaging. PFAS are often referred to as "forever chemicals" because they do not break down easily in the environment or the human body. Due to their widespread use, PFAS have been detected in soil, water, and even in the blood of people and animals. Concerns have arisen about their potential health effects, including links to certain cancers and other serious health issues. As a result, many governments are working to regulate and reduce PFAS exposure.