The literature review presents data on the effect of organic and inorganic compounds, the so-called "main" xenobiotics (lead, mercury) on children and adolescents. It is noted that the effect of each heavy metal is different. Therefore, only their total assessment (blood, urine, saliva, hair, biological tissues) makes it possible to determine the level of toxic effects on the child and confirm the clinical decision. "Carrying mercury", in the absence of clinical signs of intoxication, does not always correlate with chronic poisoning. Ranking of clinical syndromes with the level of heavy metals in the body of children, monitoring of cause-and-effect relationships, detection of the prevalence of neurological changes becomes a priority in clinical Pediatrics. At the moment, the effects of heavy metals on the health of children and adolescents are a universal medical category. It forms the strategy of clinical pediatrics and pediatric neurology and a subject of interest for ecologists, toxicologists and sociologists.
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