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Originally posted by digitul punk Have a source? I wanna read this.

There were several studies done that debunked the myth. I'll find and post a few links. In the meantime...

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MYTH: MARIJUANA KILLS BRAIN CELLS. Used over time, marijuana permanently alters brain structure and function, causing memory loss, cognitive impairment, personality deterioration, and reduced productivity. FACT: None of the medical tests currently used to detect brain damage in humans have found harm from marijuana, even from long term high-dose use. An early study reported brain damage in rhesus monkeys after six months exposure to high concentrations of marijuana smoke. In a recent, more carefully conducted study, researchers found no evidence of brain abnormality in monkeys that were forced to inhale the equivalent of four to five marijuana cigarettes every day for a year. The claim that marijuana kills brain cells is based on a speculative report dating back a quarter of a century that has never been supported by any scientific study. http://www.lindesmith.org/marijuana/factsmyths/

http://aje.oxfordjournals.org/cgi/c...y=4UzcqoQxcZdtY

http://www.pnas.org/cgi/content/full/95/14/8268

http://www.newscientist.com/channel/info-tech/dn7298

http://news.bbc.co.uk/1/hi/health/4286435.stm



There was also a good study done by Dr. William Slikker, Jr., but I still have to find it's contents.



Here's a link to a list of several more studies which I haven't had time to further delve into:

http://www.druglibrary.org/olsen/MEDICAL/paule.html