Perfluoroalkyl substances (PFAS) are a group of human-made chemicals used in various industrial and consumer products. They are known for their water- and grease-resistant properties, making them common in items like non-stick cookware, food packaging, and stain-resistant fabrics. PFAS are often referred to as "forever chemicals" because they do not break down easily in the environment. Due to their widespread use, PFAS can be found in soil, water, and even in the human body. Concerns have arisen regarding their potential health effects, including links to certain cancers and other serious health issues. Regulatory agencies are actively studying PFAS to better understand their impact on health and the environment.