Percentage of Columbia children tested for lead who had elevated blood levels: 20-25%
Even miniscule amounts of lead can cause serious mental and emotional problems in children and can increase the chances they could end up in prison.
A study published in the Journal of Pediatrics found that 8 percent of children under the age of 6 in Pennsylvania had seriously elevated levels of lead in their blood, 5 or more micrograms per deciliter.
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