Childhood Lead Exposure Linked to Lower Status Jobs, Lower IQ as Adults

Childhood Lead Exposure Linked to Lower Status Jobs, Lower IQ as Adults

A long-term study of 565 children who grew up in the era of leaded gasoline has shown that their exposure to the powerful neurotoxin may have led to a loss of intelligence and occupational standing by the time they reached age 38. 94% of the children exceeded today’s reference value of 5 micrograms of lead per deciliter of blood. For each 5-microgram increase in blood lead, a person lost about 1.5 IQ points.

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