Lead dust refers to tiny particles or residue that is created when lead-based materials, such as paint or pipes, are disturbed or damaged. This can occur through activities like sanding, drilling, or demolition work involving lead-containing structures. Lead dust poses a significant health hazard because it can be easily inhaled and absorbed into the bloodstream, leading to various adverse effects on human health such as neurological damage, learning disabilities, and behavioral problems, particularly in children. For this reason, lead-based paint and materials are now heavily regulated, and precautions must be taken to minimize exposure to lead dust during renovation or remodeling projects involving these substances.