Marijuana use more than doubles in just 12 years

Elahe Izadi ~ Washington Post ~

 

The number of adults using marijuana more than doubled in recent years, according to new research culling data from two massive surveys.

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In 2001, just 4.1 percent of adults said they used marijuana. That increased to 9.5 percent by 2013. The findings were published Wednesday in JAMA Psychiatry.

 

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