Childhood Lead Exposure Associated With Lower IQ

Childhood Lead Exposure Associated With Lower IQ

Childhood Lead Exposure Associated With Lower IQ

Children who had higher blood lead levels at age 11 were more likely to have lower cognitive function, IQ and socioeconomic status when they were adults at age 38, according to a study published by JAMA.

The effects are slight, but significant, showing that the higher the blood lead level in childhood, the greater the loss of IQ points and occupational status in adulthood.

The study found that 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

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