11 Jan '12, 1pm

Smoking marijuana doesn't harm your lungs, US study finds

CHICAGO - Smoking a joint once a week or a bit more apparently doesn't harm the lungs, suggests a 20-year study in the United States that bolsters evidence that marijuana doesn't do the kind of damage tobacco does. The study, one of the largest and longest on the health effects of marijuana, was conducted by researchers at the University of California, San Francisco, and the University of Alabama at Birmingham. It was released yesterday by the Journal of the American Medical Association. The results, however, are much hazier for heavy users, those who smoke two or more joints daily for several years. The data suggest that using marijuana that often might cause a decline in lung function, but there weren't enough heavy users among the 5,000 young adults in the study to draw firm conclusions. Still, the authors recommended "caution and moderation when marijuana use is consid...

Full article: http://www.todayonline.com/World/EDC120111-0000156/Mariju...

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