One in seven California teens and adults used marijuana in the last year, a sharp increase from a decade ago, new federal estimates show.
The city of San Francisco has the highest marijuana use rate: Almost one in four San Francisco teens and adults used marijuana in the last year, according to the U.S. Substance Abuse and Mental Health Services Administration, which polled residents nationwide between 2012 and 2014. The next highest rates of use were in far Northern California - the "state of Jefferson."
Medical marijuana use is legal in California and obtaining a medical marijuana card is not difficult. A ballot initiative in November would fully legalize marijuana for recreational use.
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