Cover Picture: Evaluating the risk of chemical contaminants requires knowledge of BOTH exposure and hazard. To illustrate, just because exposure to a chemical above a certain level is known to elicit an adverse health effect, it does necessarily represent a problem, if exposure does not occur at or above that level. Thus, research that quantifies the level of exposure is an essential component of chemicals risk assessment. Moreover, where overall human exposure may be at a level approaching or above that considered to be potentially harmful studies that highlight the relative contribution of different exposure pathways potentially assist the development of strategies to reduce exposure - e.g., by recommending at-risk individuals limit consumption of particular foodstuffs as with fish advisories in the United States.
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