Study: Marijuana not as harmful to the lungs as cigarettes

January 11, 2012 12:00:00 AM PST
Occasional marijuana use does not appear to have long-term adverse effects on lung function, according to new research published in the Journal of the American Medical Association.

Researchers from the University of Alabama at Birmingham and University of California at San Francisco analyzed marijuana and tobacco use among 5,000 black and white men from the national database, CARDIA (Coronary Artery Risk Development in Young Adults study), which was intended to determine heart disease risk factors over a 20-year period.

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