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Does smoking marijuana from a tobacco leaf cause lung cancer?

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May 23, 2006 -- People who smoke marijuana do not appear to be at increased risk for developing lung cancer lung cancer, new research suggests. While a clear increase in cancer cancer risk was seen among cigarette smokers in the study, no such association was seen for regular cannabis users. read more

Just smoking marijuana can cause lung cancer. Marijuana smoke has the same carcinogens as tobacco smoke. Marijuana isn't quite as bad because the THC in marijuana THC lessens the harm of the carcinogens, but it doesn't eliminate it. read more

Even though marijuana smoke is not associated with lung cancer, it may still cause harm to the lungs with heavy use. However, the impact that marijuana has on the lungs is still not completely clear. Some studies have found that heavy marijuana use does not impair the lungs, while others have found the opposite. read more

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