I think that the relationship between marijuana smoking and lung damange isn't so cut and dry bad as smoking nicotine is. Here's a blurb: > Regular smoking of

I think that the relationship between marijuana smoking and lung damange isn't so cut and dry bad as smoking nicotine is. Here's a blurb: > Regular smoking of marijuana by itself causes visible and microscopic injury to the large airways that is consistently associated with an increased likelihood of symptoms of chronic bronchitis that subside after cessation of use. On the other hand, habitual use of marijuana alone does not appear to lead to significant abnormalities in lung function when assessed either cross-sectionally or longitudinally, except for possible increases in lung volumes and modest increases in airway resistance of unclear clinical significance. Therefore, no clear link to chronic obstructive pulmonary disease has been established. Although marijuana smoke contains a number of carcinogens and cocarcinogens, findings from a limited number of well-designed epidemiological studies do not suggest an increased risk for the development of either lung or upper airway cancer from light or moderate use, although evidence is mixed concerning possible carcinogenic risks of heavy, long-term use. https://pubmed.ncbi.nlm.nih.gov/23802821/ https://pubmed.ncbi.nlm.nih.gov/23802821/