Variation in cancer incidence among different populations suggests that many kinds of environmental factors contribute to the development of cancer. These include chemicals, complex mixtures, physical agents, biological agents, occupational exposures and lifestyle factors.
Scientists worldwide conduct epidemiological studies, animal bioassays, and a wide variety of molecular and mechanistic studies to identify specific causes of cancer and to understand the mechanisms by which cancer develops. As this evidence accumulates, there may be questions about how to interpret these data and whether action is needed to protect the public from suspected hazards to human health.
Scientific advice that is both authoritative and trusted can assist governmental agencies and individuals to understand complex scientific information and to use it to reduce the global burden of cancer.