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Marijuana Dosen't Harm Brain, Study Shows

Discussion in 'Channel Zero' started by Dick Quickwood, Jun 30, 2003.

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  1. Dick Quickwood

    Dick Quickwood 12oz Loyalist

    Joined: Aug 25, 2002 Messages: 14,783 Likes Received: 14
    LOS ANGELES (June 27) - Smoking marijuana will certainly affect perception, but it does not cause permanent brain damage, researchers from the University of California at San Diego said Friday in a study.

    "The findings were kind of a surprise. One might have expected to see more impairment of higher mental function," said Dr. Igor Grant, a UCSD professor of psychiatry and the study's lead author. Other illegal drugs, or even alcohol, can cause brain damage.

    His team analyzed data from 15 previously published, controlled studies into the impact of long-term, recreational cannabis use on the neurocognitive ability of adults.

    The studies tested the mental functions of routine pot smokers, but not while they were actually high, Grant said.

    The results, published in the July issue of the Journal of the International Neuropsychological Society, show that marijuana has only a marginally harmful long-term effect on learning and memory.

    No effect at all was seen on other functions, including reaction time, attention, language, reasoning ability, and perceptual and motor skills.

    Grant said the findings are particularly significant amid questions about marijuana's long-term toxicity now that several states are considering whether to make it available as a medicinal drug.

    In California, growing marijuana for medical purposes is legal under a voter-approved law.

    The UCSD analysis of studies involving 704 long-term cannabis users and 484 nonusers was sponsored by a state-supported program that oversees research into the use of cannabis to treat certain diseases.

    Anecdotal evidence has shown that marijuana can help ease pain in patients with diseases like multiple sclerosis or prevent severe nausea in cancer patients, but the effects have yet to be proven in controlled studies, Grant said.

    The UCSD research team said the problems observed in learning and forgetting suggest that long-term marijuana use results in selective memory defects, but said the impact was of a very small magnitude.

    "If we barely find this tiny effect in long-term heavy users of cannabis, then we are unlikely to see deleterious side effects in individuals who receive cannabis for a short time in a medical setting," Grant said.

    In addition, he noted that heavy marijuana users often abuse other drugs, such as alcohol and amphetamines, which also might have long-term neurological effects.

    Some of the research studies used in the analysis were limited by the numbers of subjects or insufficient information about factors like exposure to other drugs or whether participants suffered from conditions like depression or personality disorders.

    "If it turned out that new studies find that cannabis is helpful in treating some medical conditions, this enables us to see a marginal level of safety," Grant said.
     
  2. Dick Quickwood

    Dick Quickwood 12oz Loyalist

    Joined: Aug 25, 2002 Messages: 14,783 Likes Received: 14
    haha has anyone seen those commercials that say Marijuana: its more harmful than we all thought
     
  3. When

    When 12oz Loyalist

    Joined: May 4, 2000 Messages: 10,294 Likes Received: 3
  4. Dick Quickwood

    Dick Quickwood 12oz Loyalist

    Joined: Aug 25, 2002 Messages: 14,783 Likes Received: 14
  5. effyoo

    effyoo Elite Member

    Joined: Sep 2, 2002 Messages: 4,703 Likes Received: 0
  6. space base

    space base Senior Member

    Joined: May 4, 2003 Messages: 1,765 Likes Received: 0
    THATS OLD NEWS, ONCE YOU STOP TH STUPIDNESS WEARS OFF
     
  7. When

    When 12oz Loyalist

    Joined: May 4, 2000 Messages: 10,294 Likes Received: 3
    maybe biased

    maybe the people they studied had different smoking habits than others
     
  8. Dick Quickwood

    Dick Quickwood 12oz Loyalist

    Joined: Aug 25, 2002 Messages: 14,783 Likes Received: 14
    i think the "brain damage" you get is the small amount of thc that remains in your body
     
  9. cantbefaded

    cantbefaded Member

    Joined: May 29, 2003 Messages: 359 Likes Received: 0
    Ban, lose, cancel, close, etc.
     
  10. FratGuyJoe

    FratGuyJoe Junior Member

    Joined: May 17, 2003 Messages: 222 Likes Received: 0
    i haven't slept in 36 hours:freak2:
     
  11. ment2

    ment2 New Jack

    Joined: Apr 16, 2002 Messages: 11 Likes Received: 0
    its so dumb to do a study on weed smokers' mental funcitons when they're high and then use the information as if that was how the brain functioned all the time... it never even occured to me that that's where most of the "facts" about marijuana come from.

    i hate those "more harmful" commercials. it should be "stupid people: more harmful then we all thought." one of them is two kids smoking in a bathroom stall at a fucking concert... if you're dumb enough to smoke weed in a venue, in the bathroom, with a bunch of people in there, you shouldnt be smoking weed anyway. anywho... fuckin weed. yeahr.
     
  12. SteppinRazor

    SteppinRazor Junior Member

    Joined: May 5, 2003 Messages: 144 Likes Received: 0
    i am high right now.
    and they didn't do the study while they were high, they said they studied them when they weren't high.
     
  13. krie

    krie Guest


    you are a raver aren't you ?
     
  14. test pattern

    test pattern Elite Member

    Joined: Jan 21, 2002 Messages: 3,975 Likes Received: 0
    i am
    :gaga:
     
  15. OMARNYCAKASW1

    OMARNYCAKASW1 Senior Member

    Joined: Apr 10, 2000 Messages: 1,385 Likes Received: 1
    if this doesnt prove it damages your brain i dont know what else does







    [​IMG]
     
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