Daily use of marijuana as well as past month rates rose for both men and women aged 26 and older in states with medical marijuana laws in effect. Marijuana use among those younger than 26 years old was generally unaffected by changes in the law.
Columbia University’s Mailman School of Public Health. “More adults use marijuana in states where it is legal.” www.sciencedaily.com. 13 November 2017. Web. 20 November 2017.