Cannabis smoke exposure, even long-term, is not positively associated with chronic obstructive pulmonary disease (COPD), lung cancer, or irreversible airway damage, according to a literature review published in the journal Breathe.
“The long-term respiratory effects of cannabis differ from traditional smoking,” authors concluded. “[C]annabis smoking does not appear to be carcinogenic.”
Authors also acknowledged that vaporizing cannabis – a process which activates cannabinoids, but does not heat them to the point of combustion – reduces many of these symptoms.
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