What do the tungsten levels mean to individuals?
CDC sent study participants their results along with the most complete information available on the relation between tungsten levels and health effects. At this time, there are no known adverse health effects of exposure to tungsten at the levels observed. In August 2002, CDC nominated tungsten for study with high priority to the National Toxicology Program (NTP) [external link] of the National Institutes of Health. NTP is conducting the process of reviewing tungsten for its research agenda. For the latest progress on this issue, see The National Toxicology Program and Tungsten.