Abstract
Lead is a nonessential element, being a toxic metal that can adversely affect humans exposed to it, even at low levels of exposure. Indeed, children have been especially susceptible to lead toxicity with numerous epidemiological studies reporting neurocognitive functions to be inversely correlated with lead levels (blood or tooth-lead levels), even when confounding variables were controlled. Further, evidence is accumulating supporting the suggestion that there may be no threshold to the detrimental effects of lead. Thus, exposure to sources of lead should be kept to a minimum, especially for children (United States Centers for Disease Control [USCDC] 1991; Bellinger 1997).
Published Version
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