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June 24, 2019

Gee whiz: Testing of sewage confirms rise in marijuana use

  • Consumption in Tacoma doubled from 2013-2016, researchers found.
    • By GENE JOHNSON
    Associated Press

    SEATTLE — The proof is in the pee.

    A federally funded study has confirmed, not surprisingly, that marijuana use went up in Washington state after its first legal pot stores opened in 2014. In fact, consumption appeared to double, at least in one major city, over three years — a conclusion scientists reached by way of the unglamorous work of analyzing raw sewage.


     
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