On Tue, 22 Dec 2009 14:23:23 -0800, "Steve B"
wrote:


Reply: a lower than lethal dose may make you sleepy, or just put you into a
sleep, and if the level rose after that, you'd be front page material. I,
too, like the sensitive ones that give a constant readout.

Steve

If more than one person in a family has symptoms, that's a big warning
sign.