FACTs About Low Lead Level Exposures

New studies and re-interpretation of past studies demonstrates that it is not possible to determine a threshold below which BLL is not inversely related to IQ. [2]

Elevated BLLs are associated with Attention Deficit Hyperactivity Disorder (ADHD) and antisocial behavior, which in turn increase the likelihood of conduct disorder.

The Center for Disease Control and Prevention (CDC) has gradually lowered the blood lead level of concern (the BLL where intervention is recommended) from 60 ug/dL (600 ppb) in 1960 to 10 ug/dL (100 ppb) in 1991. 

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Study Shows that Lead Exposure at Young Age Leads to Decline in Socioeconomic Status

We know that children that are exposed to lead suffer from lower IQ and decreased cognitive ability.   A recent study found that children who experienced higher lead exposures saw their intellectual ability decline from their baseline starting point as time wore on---meaning that the lead exposure continued to have a negative effect on a person’s cognitive learning abilities years after the initial exposure.

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