David Nebenzahl wrote in
.com:

On 6/19/2010 5:41 AM Tegger spake thus:



But there is /still/ a threshold below which there is no
physiological or neurological harm. That's how workplace-exposure
limits are decided.

Ackshooly, that's not true, at least regarding radiation, and was
debunked many years ago by the BEIR (biological effects of ionizing
radiation) panel, who demonstrated that there is essentially *no*
lower limit of (ionizing) radiation that does not cause cumulative
effects.


Cumulative GOOD effects, or cumulative BAD effects? You do not say which.



You could look it up.




I just did.
http://en.wikipedia.org/wiki/Hormesis


--
Tegger