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CDC's third National report on human exposure to environmental chemicals
  • Published Date:
    July 2005
  • Language:
Filetype[PDF-95.42 KB]

  • Description:
    The National Report on Human Exposure to Environmental Chemicals provides an ongoing assessment of the U.S. population’s exposure to environmental chemicals using biologic monitoring (biomonitoring). Biomonitoring is the direct assessment of people’s exposure to chemicals by measuring the chemicals or their breakdown products (metabolites) in blood or urine.

    The Centers for Disease Control and Prevention (CDC) issued the First National Report on Human Exposure to Environmental Chemicals in March 2001. It presented exposure data for 27 chemicals from the 1999 National Health and Nutrition Examination Survey (NHANES 1999). The Second Report, released in January 2003, presented biomonitoring exposure data for 116 environmental chemicals (including the 27 in the First Report) for the noninstitutionalized, civilian U.S. population during 1999 and 2000.

    The Third Report provides information about 148 chemicals and is the most extensive assessment ever of exposure of the U.S. population to environmental chemicals. The Environmental Health Laboratory at the National Center for Environmental Health, CDC, conducted all measurements for the Third Report. The Third Report does not provide new health or toxicity information, state- or community-specific data, specific product- or environment-related information, or regulatory guidelines or recommendations.

    CDC uses NHANES to gather information about the health and nutritional status of the U.S. population. The information-gathering process includes health examinations, interviews, and laboratory tests. CDC asks people who take part in NHANES about their diet, exercise, and health habits and about their medical history. CDC also obtains blood and urine samples from these people.

    CDC scientists test the blood and urine samples to measure levels of different chemicals, such as metals like lead and pesticides like DDT. For the Third Report, CDC measured levels of 148 chemicals in people who took part in the survey.

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