Intuition may suggest that smoke is bad for the lungs, whether it comes from a campfire or from tobacco or marijuana. AÂ practical question is: how bad is an occasional joint, compared with some background level of air pollution and the lungsâ€™ ability to cope?
Since a few states have been loosening restrictions on marijuana, a group ofÂ Emory pulmonologists â€“ Jordan Kempker, Eric Honig, and Greg Martin — decided to look at the long-term effects of marijuana smoking on lung function. Their findings, published in the Annals of the American Thoracic Society (PDF), have already attracted some attention. Read more