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Large Study Finds No Link between Marijuana and Lung Cancer: Scientific American »

Posted by: Fedquip 1 year, 1 month ago

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The smoke from burning marijuana leaves contains several known carcinogens and the tar it creates contains 50 percent more of some of the chemicals linked to lung cancer than tobacco smoke. A marijuana cigarette also deposits four times as much of that tar as an equivalent tobacco one. Scientists were therefore surprised to learn...