In 2000, the NHSDA estimated that over 3 million, or 13 percent, of the 23 million youths aged 12 to 17 used marijuana during the year prior to the survey. More than four hundred chemicals are in cannabis. In an 8-year study by Dr. Robert Gilkeson, marijuana smokers had EEG (electroencephalogram) readings of brain dysfunctions similar to the learning disabled. People who smoke marijuana expose themselves to physical and psychological risks. While many marijuana effects are short term, such as increased appetite, dry mouth, and red eyes, other effects last longer or are permanent. The effects marijuana has on the brain also can impact users' social relationships and their performance at school or work. No longer can society characterize marijuana as a soft drug. This module addresses such issues as prevention, long term effects, educational materials, and valuable statistics surrounding marijuana use.
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