Approximately one in 10 teenagers are smoking marijuana at least 20 or more times a month, a new survey finds. The survey found past-month use of marijuana rose from 19 percent in 2008, to 27 percent last year.

Researchers found past-year use of marijuana rose from 31 percent to 39 percent in2012. The survey found lifetime use increased from 39 percent to 47 percent. Researchers said that Parents are more concerned about cocaine and heroin use, where as they are not talking about prescription drugs and marijuana. Parents need to be stressing the message that this behavior is unhealthy.

The survey suggests those teens who smoke marijuana are more likely to use of other drugs. Adolescents, who smoked, are 20 times more likely to use Ecstasy, cocaine or crack. The survey suggests teen marijuana use has become a normalized behavior.  Percent agree that they smoke marijuana. Whereas, 71 percent of teens say they have friends who use marijuana regularly. 10 percent of teens said they used prescription pain medication.

By Ammara Hashmi