What amount of ionising radiation is safe?
The effects of very low levels of ionising radiation have proved very difficult to study, since they are well below the levels of natural background radiation. In fact, the conclusions we make about the effects of low levels of radiation come from the known effects of higher levels of radiation exposure. As a result, there is no conclusive evidence for setting a ‘safe’ level of exposure above background. It is internationally recognised that any exposure carries some risk and that the risk increases as the exposure increases.
