Back in the United States, voters in Denver, Colorado, appear to have approved a ballot measure decriminalizing the recreational use of psychedelic mushrooms. Under the ballot initiative, psychedelic mushrooms will remain illegal to buy, sell or possess, but police are instructed to make enforcement of such laws the lowest possible priority. Recent medical studies have found psilocybin, the active ingredient in psychedelic mushrooms, can have positive effects treating depression, addictions, PTSD, pain and anxiety.