Radiation hormesis (i.e. low level radiation being beneficial) is considered very controversial, but the data about how low levels of radiation affects humans i

Radiation hormesis (i.e. low level radiation being beneficial) is considered very controversial, but the data about how low levels of radiation affects humans is very bad. Most data that people work with is from the Hiroshima and Nagasaki bomb survivors. On the low end of the scale the models usually just have a question mark. One of the models proposed is radiation hormesis. There is some other (controversial) data that people who are exposed to chronic radon exposure have lower levels of lung cancer. http://en.wikipedia.org/wiki/Radiation_hormesis http://en.wikipedia.org/wiki/Radiation_hormesis The plot on this page shows some of the current guesses about low-level radiation response: http://web.princeton.edu/sites/ehs/osradtraining/biologicaleffects/Risk.htm http://web.princeton.edu/sites/ehs/osradtraining/biologicale... Hormesis would dip below the axis, indicating a less than zero risk.