Health Risk versus Hazard Risk
People face all kinds of risks every day, some voluntarily and others involuntarily. Therefore, risk plays a very important role in world. Studies on cancer caused a turning point in the world of risk because it opened the eyes of risk engineers, scientists, and health professionals to the world of risk assessments. Health risk assessments provides an orderly, explicit, and consistent way to deal with scientific issues in evaluating whether a health problem exists and what the magnitude of the problem may be. This evaluation typically involves large uncertainties because the available scientific data are limited, and the mechanisms for adverse health impacts or environmental damage are only imperfectly understood. Regarding health problem identification, a problem may be defined as a specific toxic agent or a set of conditions that have the potential to cause adverse effects to human health or the environment.