Asbestos is a naturally occurring mineral that was widely used in various building materials until the mid-1980s. It was known for its heat resistance, insulating properties, and durability. However, it was discovered that asbestos exposure can cause severe health problems such as lung cancer, asbestosis, and mesothelioma.

Asbestos is a significant health risk when it is inhaled or ingested because its fibers can stay in the body for a long time. These fibers can damage the lungs, and the risk of developing asbestos-related diseases increases with the length and intensity of exposure.