(16) But over time, as the 20th century progressed, advances in pharmaceutical technology meant consumers could use more than plants to treat illness, (16) and Congress passed increasingly stringent laws that eventually criminalized the drug. In 1970, with the passage of the Controlled Substances ...
"Several years ago, before the group of papers we [analyzed] started to be published, people thought that medical marijuana laws would increase teen marijuana use by 'sending the message' to teens that marijuana was safe and acceptable to use," explained Deborah Hasin, the new study's lead ...
Hall, the lead author, is a professor at the Centre for Youth Substance Abuse Research at the University of Queensland, Australia, and is an expert on marijuana and other drug use issues. Kozlowski is professor of community health and health behavior in the University at Buffalo's School of ...