Smoking Dope Kills Your Gums

Wanna see something really gross?

Well, let’s set up the clip first: Researchers in New Zealand, at Duke and at the University of North Carolina collaborated on a large study that found a link between smoking marijuana more than once a week for years and having gum disease. The article ran in JAMA last week, and the good folks at JAMA made a movie of some really bad-looking gums.