Substance abuse has trended upward among American teens over the past three years after a decade of declines, according to a report issued on Wednesday by the Partnership at Drugfree.org.
It said marijuana and ecstasy use among teens shows marked increases while attitudes toward alcohol use have become more relaxed.
The study, sponsored by MetLife Foundation and the 22nd in an annual series, found that between 2008 and 2010 teens who said they had used marijuana in the past year climbed to 39 percent from 32 percent.
Full story: Teen substance abuse on rise over past 3 years