RT Journal
T1 Vital signs: Nonsmokers’ exposure to secondhand smoke—united states, 1999-2008
JF JAMA
JO JAMA
YR 2010
FD November 3
VO 304
IS 17
SP 1892
OP 1894
DO 
UL http://dx.doi.org/
AB 
Secondhand exposure to tobacco smoke causes heart disease and lung cancer in nonsmoking adults and sudden infant death syndrome, acute respiratory infections, middle ear disease, exacerbated asthma, respiratory symptoms, and decreased lung function in children.1 No risk-free level of secondhand smoke exposure exists.1 Levels of secondhand smoke exposure among U.S. nonsmokers have fallen substantially during the past 20 years.2 However, millions of nonsmokers remain exposed to secondhand smoke in homes, workplaces, public places, and vehicles.1 Using data from the National Health and Nutrition Examination Survey (NHANES) for 1999-2008, this report describes recent trends in secondhand smoke exposure among nonsmokers by analyzing levels of serum cotinine, a metabolite of nicotine that reflects recent exposure.