Colorado medical marijuana is proving to be the hot topic of recent debate. In an effort to debate on legality, many have cited potential dangers of Colorado cannabis. Most of the dangers cited and commonly accepted by the public are quite frankly false. Today's myth: marijuana causes brain damage. Many of the "scary" myths of marijuana have been carried over from the seventies and the refer madness craze. Several studies have shown medical marijuana shows no signs of brain damage among adults; even among heavy, long term users (available in the Journal of the American Medical Association). Other studies have even shown some positive effects of cannabis on the brain, such as reduction of brain chemicals responsible for obsessive and compulsive disorders. Opponents of medical marijuana in Colorado constantly cite myths such as these in an effort to provoke fear and doubt among the public. Unfortunately, it seems these long time accepted myths are difficult to debunk among the public, especially lawmakers. Medical marijuana in Colorado is repetitively proving the medical and industrial benefit of cannabis in the form of highly successful dispensaries providing relief to legitimate patients.Tearing down the walls of doubt will be paramount to the future success of the industry.