Lead in gasoline may have had disastrous effects on the health of Americans over the age of 25, a new study finds.Researchers from Duke University in Durham, , estimate that a combined 824 million IQ points may have been lost by 170 million Americans born before 1996 from the constant inhalation of lead in the environment exhausted by cars.The lead exposure is likely also responsible for cardiovascular and respiratory issues, though researchers could not quantify the collective harm the same way they could cognitive issues and IQ points.
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