Although we now know that asbestos is a human carcinogen, was once adopted as a wonderful insulator material was added to a number of different materials. Thus, many people were exposed to the toxin inadvertently. In addition, older buildings may still contain asbestos despite the dangers. If you suspect that you have been exposed to toxic asbestos, you may want talk with a doctor about testing for early detection of cancer.
The reason why some are considered toxic asbestos is that not all friable asbestos. Friable means that the asbestos can flake into microscopic pieces that can be inhaled or ingested. Some non-friable asbestos, which means that it is so bound to another material that can not escape and enter your body.