U.K. Study Finds Teens Know About Marijuana Harms

An online survey of 27,000 U.K. teens found that many were well aware of the risks associated with marijuana use, including panic attacks and paranoia, the BBC reported Aug. 6.

The survey from the U.K. antidrug group Frank found that 74 percent of teens acknowledged at least some of the drawbacks of using marijuana; for example, 42 percent said they personally knew someone who had experienced memory loss, panic attacks or paranoia due to marijuana use.

Overall, 64 percent of those surveyed said that marijuana could cause panic attacks, 41 percent said users could become paranoid, and 38 percent said memory loss was associated with using the drug.

Half of the adolescents surveyed also believed that marijuana use led to loss of motivation and poor grades in school.