[LukeL]

I can remember a scientist saying you could eat either urainium or plutonium and no get sick, it is just when it is highly refined that it becomes dangerous.

[mvpel]

http://www.wise-uranium.org/utox.html

Depends on whether its inhaled or eaten, powdered/vapor or solid, pure or ceramic.

Dissolved in drinking water, it can be very hard on your kidneys given enough time and volume.