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ATLANTA (AP) - Americans have lower levels of lead, secondhand-smoke byproducts and other potentially dangerous substances in their bodies than they did a decade ago, according to perhaps the most extensive government study ever of exposure to environmental chemicals.
"These data help relieve worry and concern," Dr. Julie Gerberding, director of the Centers for Disease Control and Prevention, said Thursday.
The CDC released its first National Report on Exposure to Environmental Chemicals in 2001 and has updated it every two years. For its latest findings, the CDC took blood and urine samples from about 2,400 people in 2001 and 2002 and tested for 148 environmental chemicals, including metals, pesticides, insect repellants and disinfectants.
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