Exposure to leaded gasoline may have led to widespread loss of intelligence across America, reveals study

(Natural News) Exposure to leaded gasoline in childhood may have negatively impacted intelligence and job status across America, according to a recent study. Researchers examined blood samples from more than 500 participants who grew up in the era of leaded gasoline. Data show that participants with more than 10 micrograms of lead per deciliter of blood at...

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