Here is a yellow journalism about tungsten metal.

On 20 August 2002, officials representing the U.S.-based Centers for Disease Control and Prevention announced that urine tests on leukemia patient families and control group families in the Fallon, Nevada area had shown elevated levels of tungsten in the bodies of both groups.

Sixteen recent cases of cancer in children were discovered in the Fallon area, which has now been identified as a cancer cluster; although the majority of the cancer victims are not longtime residents of Fallon.

However, there is not enough data to support a link between tungsten and leukemia at this time.