Asbestos is a naturally occurring mineral that was widely used in construction and manufacturing in the past. It was valued for its heat resistance, tensile strength, and durability. However, it was later discovered that it posed a significant health risk to those who were exposed to it. Asbestos exposure can lead to serious health problems, such as lung cancer, mesothelioma, and asbestosis. Asbestos has been banned in the UK since 1999, but it can still be found in many older buildings.