Marijuana Smoke Doesn’t Harm Your Lungs or Cause Cancer, Study Finds

LOS ANGELES, CA — Cannabis smoke exposure is not particularly detrimental to lung health and is not associated with the onset of lung cancer, emphysema, or COPD, according to data published in the journal Chest.

Donald Tashkin of UCLA’s David Geffen School of Medicine reviewed dozens of studies assessing cannabis smoke exposure and lung health, involving thousands of subjects

Studies also fail to show a relationship between cannabis smoking and decrements in lung function, and “argue against an association of marijuana with clinically significant emphysema.”

Tashkin’s findings are similar to those of past reviews finding that cannabis smoke exposure fails to possess the same sort of significant adverse pulmonary effects as does tobacco.

Full text of the study, “Marijuana and lung disease,” appears in Chest. NORML’s fact-sheet, “Cannabis exposure and lung health,” appears online.

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