Perfluoroalkyl and polyfluoroalkyl substances, commonly known as PFAS, are a group of man-made chemicals used in various industrial and consumer products. They are known for their water- and grease-resistant properties, making them useful in items like non-stick cookware, water-repellent fabrics, and food packaging. PFAS are persistent in the environment and can accumulate in the human body over time. Due to their widespread use and resistance to degradation, they have raised concerns regarding potential health effects, leading to increased regulatory scrutiny and research into safer alternatives.