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Re: You can Still Have Your Joint, but Only if it's Pure!
Quote:
Originally Posted by Norrin Radd
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"A number of animal studies have revealed respiratory tract changes and diseases assoicated with marijuana smoking, but others have not. Extensive damage to the smaller airways, which are the major site of chronic obstructive pulmonary disease (COPD), and acute and chronic pneumonia have been observed in various species exposed to different doses of marijuana smoke. In contrast, rats exposed to increasing doses of marijuana smoke for one year did not show any signs of COPD, whereas rats exposed to tobacco did."
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Rats are not a good model for particle inhalation toxicity studies; their nasal passages filter out *much* more than ours do. I'm guessing that this is an older study; not many ACAUC boards would approve it these days for that reason.
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