Experiment Mimics 'Extreme' Exposure to Secondhand Cannabis Smoke (IMAGE)

Johns Hopkins Medicine

Experiment Mimics 'Extreme' Exposure to Secondhand Cannabis Smoke

Caption

Non-smoking volunteers are exposed to cannabis smokers' secondhand smoke for one hour in an experimental chamber at Johns Hopkins. When ventilation fans were turned off, as in this image, all non-smokers showed detectable levels of cannabis' active ingredient in blood and urine, and reported feeling effects of the drug.

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Courtesy of Johns Hopkins Medicine.

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