Dr. Ohlms addresses why marijuana continues to be popular among both teens and adults. Ohlms demonstrates that marijuana is not a harmless drug. Ohlms says, "For the most part, beliefs about the dangers associated with the use of these drugs - which have been harbingers of change in the past - remained fairly stable in 1999." In this video, he discusses many of the common side effects, signs and symptoms of drug use, and newly discovered psychological issues which face marijuana users. An update to Dr. Ohlms' previous film "Marijuana in the 90's."

• Films regarding Marijuana, its use and treatment