![dek](https://content.time.com/time/2010/hazards_home_plastics/asbestos.jpg)
What It Is: A naturally occurring fibrous mineral
Found In: Housing insulation, drywall, artificial fireplace logs, toys
Health Hazard: Mesothelioma, a fatal cancer
What You Should Know: Asbestos in products is not always labeled, and while most manufacturers have abandoned it or reduced its levels, it's still not banned by the U.S. government