An overview of the different approaches to cancer risk assessment of environmental factors ? including ?-omics? technologies, discussing the strengths and weaknesses of the methods in different fields. The main focus is on the carcinogenic effects of ionizing and non-ionizing radiation, demonstrating the difficulties in accurately assessing those factors that may or may not pose a significant cancer risk. The book extends the view to a broader context of risk assessment, highlighting various aspects of risk management. Written by leading experts in the field, this is a resource for policy makers and professionals in health risk assessment, and public health workers, as well as oncologists and researchers in academia.