Careful, cannabis users: Bongs may create more secondhand smoke than cigarettes

In a study sure to kill the buzz at many a party, researchers at UC Berkeley say bongs may create more secondhand smoke than tobacco cigarettes.

The study, published Wednesday on the JAMA Network, found that smoking cannabis in a bong created concentrations of fine particulate matter four times greater than concentrations observed after smoking a tobacco cigarette or hookah pipe.

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