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7 Things You Didn't Know About Medical Marijuana

Written by Emily Lapkin and Medically Reviewed by Scott Pearlman, M.D.

1. Legal in 15 States (and DC)

Think you know it all about medical marijuana? You might be surprised to learn it's already legal in more than 15 places. If you live in AK, AZ, CA, CO, DC, HI, ME, MI, MT, NV, NJ, NM, OR, RI, VT, WA -- with the proper permit -- you can smoke away what ails you.