Lead-based paints are coatings that contain lead, a toxic metal that can cause serious health issues, especially in children. These paints were commonly used in homes and buildings before the late 1970s, when regulations began to limit their use due to health concerns. Exposure to lead from these paints can occur when the paint deteriorates, creating dust or chips that can be ingested or inhaled. It is important to identify and safely remove lead-based paints in older structures to prevent lead poisoning, which can affect brain development and cause other health problems in children and adults.