“According to a new study, habitual use of marijuana alone doesn’t appear to lead to significant abnormalities in lung function, nor does it increase the risks of COPD or either lung or upper airway cancer.”
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| “The pulmonary consequences of regularly smoking marijuana are far less than for tobacco, according a review of the published evidence conducted by Dr. Donald P. Tashkin, emeritus professor of medicine and medical director of the pulmonary function laboratory at the University of California, Los Angeles. “
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