An Introduction to Depleted Uranium by Thomas Fasy MD PhD
By the early 1900s, uranium was well recognized to be a kidney toxin. By the mid-1940s, uranium was known to be a neurotoxin. By the early 1970s, uranium was recognized to be a carcinogen based on mortality studies of uranium workers and on experiments with dogs and monkeys. The first evidence that uranyl ions bind to DNA was reported in 1949 and by the early 1990s, uranium was shown to be a mutagen. Also, in the early 1990s, uranium was shown to be a teratogen, that is, an inducer of birth defects. The toxic effects of uranium on the kidney and on the nervous system typically occur within days of exposure and radiation probably plays little or no role in mediating these effects. In contrast, the carcinogenic effects of uranium have a delayed onset. The teratogenic effects of uranium might be due to exposure of one parent prior to conception as well as to exposure of the mother to uranium early in pregnancy.
<SNIP>
Following impact with hard targets, uranium metal undergoes combustion releasing large quantities of very small uranium oxide dust particles into the environment.
These dust particles derived from depleted uranium weapons are drastically different from the natural uranium that is normally present in rocks and soil.
Soil particles contain uranium at very low concentrations, typically less than 5 parts per million; the vast majority of these soil particles, however, are too large to be inhaled deep into the lungs. In contrast, the dust particles derived from depleted uranium weapons contain very high concentrations of uranium, typically more than 500.000 parts per million; moreover, most of the D.U. dust particles are sufficiently small to be inhaled deep into the lungs. Thus, compared to the uranium naturally present in the environment, D.U. dust contains uranium in a form that is vastly more bio-available and more readily internalized.
http://www.democraticunderground.com/discuss/duboard.php?az=show_topic&forum=104&topic_id=4124449http://www.democraticunderground.com/discuss/duboard.php?az=show_topic&forum=104&topic_id=4124449