Smoke.

Secondhand Marijuana Smoke?

November 24, 2014  /  The NIDA Blog Team

You may have heard the phrase “contact high." But studies show that very little THC is exhaled back into the air when a smoker exhales. Read More »

Marijuana in a greenhouse

Can It Be Bad If It’s Natural?

March 26, 2013  /  Eric Wargo, NIDA Science Writer

“Marijuana is natural, so how can it be harmful?” Lots of teens ask us this question, and it’s a good one. Read More »

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