NPR

Childhood Exposure To Lead Can Blunt IQ For Decades, Study Suggests

Researchers following a group of New Zealanders over the course of 40 years found an association between childhood lead exposure and declines in intelligence and socioeconomic status later in life.
State and federal policies now limit the use of lead in gasoline, paint and plumbing, but children can still ingest the metal through contaminated soil. The effects of even fairly small amounts can be long-lasting, the evidence suggests.

Exposure to lead as a child can affect an adult decades later, according to a study out Tuesday that suggests a link between early childhood lead exposure and a dip in a person's later cognitive ability and socioeconomic status.

Lead in the United States can come from lots of sources: old, peeling paint; contaminated soil; or water that's passed through lead pipes. Before policies were enacted to get rid of lead in gasoline, it could even come from particles

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