Tests Show 70 Percent Less Exposure to Tobacco Smoke
From Alcohol, Tobacco and Other Drugs News:
Tests of nonsmokers indicate that exposure to secondhand smoke in the U.S. may have fallen as much as 70 percent between 1998 and 2002.
WebMD reported June 7 that researchers from the Centers for Disease Control and Prevention reviewed blood levels of cotinine, a nicotine metabolite, among about 30,000 nonsmokers who took part in national health surveys and blood tests.
Researcher James Pirkle, M.D., Ph.D., and colleagues reported that cotinine levels declined among all ages, genders, races, and ethnic groups studied.
But blacks still had higher cotinine levels than whites or Hispanics; researchers were unsure whether this was due to exposure or metabolic factors.
The study appears in the June 2006 issue of the journal Environmental Health Perspectives.
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