There is evidence for and debate surrouding hormesis, a positive biological response to a little bit of something deadly at higher doses e.g. low-dose radiation

There is evidence for and debate surrouding hormesis, a positive biological response to a little bit of something deadly at higher doses e.g. low-dose radiation. [1] [2] http://en.wikipedia.org/wiki/Hormesis http://en.wikipedia.org/wiki/Hormesis http://en.wikipedia.org/wiki/Radiation_hormesis http://en.wikipedia.org/wiki/Radiation_hormesis