Lead paint is a type of paint that contains lead, a toxic metal that can cause serious health problems, especially in children. It was commonly used in homes and buildings before the 1970s, when its dangers became widely recognized. Lead can enter the body through ingestion or inhalation, often from deteriorating paint or dust. Due to its harmful effects, the use of lead paint has been banned in many countries, including the United States. Homes built before 1978 may still contain lead paint, so it is important for homeowners to test for lead and take necessary precautions during renovations or repairs.