Complex sentence: Asbestos is harmful to health and produces lung cancers years after professional or occasional exposure (asbestosis) and starting from the seventies asbestos use became progressively prohibited, however in several countries it was still used for building materials untill after 2010 and beyond.
Split into simpler sentences: Asbestos is harmful to health and produces lung cancers years after professional or occasional exposure (asbestosis). Starting from the seventies, asbestos use became progressively prohibited; however, in several countries, it was still used for building materials until after 2010 and beyond.