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Here's another possible reason to reduce exposure to toxic materials: While national experts hail better choices as a reason for lower teen pregnancy rates, some research indicates that efforts to reduce youthful exposure to lead may have helped, as well.
In a paper just released by the National Bureau of Economic Research, Jessica Wolpaw Reyes, an associate professor of economics at Amherst College, makes the case that reducing the amount of lead in teens' blood reduces the likelihood of pregnancy by age 17 — and offers even greater reduction in the chance a teenager will be pregnant by age 19.
Her analysis, Reyes wrote, "indicates that higher childhood lead exposure is associated with substantial adverse behavioral consequences from childhood through young adulthood." Among the behavior problems are teen pregnancy, teenage aggressive behavior and teenage criminal behavior. ... "This evidence suggests that, by increasing aggression and other behavior problems, even moderate exposure to lead in early childhood can have substantial and persistent adverse effects on individual behavior."
Concerted efforts to reduce exposure to lead, including The Lead Contamination and Control Act of 1988 and phasing out of gasoline as part of the later Clean Air Act, have coincided with reductions in teen births (down one-fifth in the 1990s) and teen crime (down one-third), according to Reyes' analysis.
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