states who have passed use of medical marijuana
On November 6, 2012, Massachusetts voters passed the Massachusetts Medical Marijuana Initiative with 63% support, legalizing the use of medical marijuana and establishing a state-regulated distribution network. Massachusetts was the 18th state to legalize the medical use of marijuana.
In four states, Alaska, Colorado, Oregon and Washington, the sale and possession of marijuana is legal for both medical and non-medical use; and Washington DC has legalized personal use but not commercial sale.