A new study has affirmed that medical marijuana laws do not increase the likelihood that a young person will choose to smoke marijuana recreationally. The study, “Effects of State Medical Marijuana Laws on Adolescent Marijuana Use,” compared teen use rates of marijuana in several states that now have medical marijuana laws from 2003 – 2011. Conducted by researchers at the University of Florida’s College of Medicine, the study was published in the American Journal of Public Health last month. Researchers…