Radiobiological effects of low-level radiation and cancer risks

This article briefly reviews evidence for cancer induction by radiation. Although there are extensive data showing that high levels of radiation do indeed result in increased cancer incidence, the effects of low-level radiation are still not certain. The high incidence of cancer in the population makes identification of any extra small effect very difficult, and results are controversial. Advances in molecular radiobiology are required to understand the dose-response relationship and thus to enable accurate assessments of cancer risks