Asbestos is a naturally occurring mineral that was widely used in the construction industry until it was banned in the UK in 1999. It has been found to cause various lung diseases, including mesothelioma, lung cancer, and asbestosis. Over time, the fibres in asbestos-containing materials can become airborne and inhaled, leading to health complications.

Asbestos is commonly found in materials such as insulation, flooring, ceiling tiles, roofing shingles, and cement. It can be difficult to identify asbestos-containing materials, which is why it's crucial to have your property tested by professionals. It's worth noting that not all asbestos-containing materials are dangerous, but it's always better to err on the side of caution.