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Lead exposure in childhood linked to lower IQ, lower status jobs, as adults: Leaded gasoline creates a natural experiment in long-term study


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. Ninety-four percent 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.

Source: Lead exposure in childhood linked to lower IQ, lower status jobs, as adults: Leaded gasoline creates a natural experiment in long-term study

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