06/06/2010 05:12 am ET | Updated May 25, 2011

Study: Lack Of Sleep Linked To Higher Marijuana Use In Teens

Teenagers may be night owls, but according to new research by a UC San Diego assistant professor, those hours out of bed each night may be turning more teens into weed users.

In her study, psychiatry assistant professor Sara Mednick examined over 8,000 adolescents and mapped how sleep and marijuana use was connected between their social groups. Instead of examining the effects of marijuana on sleep patterns, the researchers analyzed drug use in the opposite direction. They studied how sleep patterns affected drug use.