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Study Shows Marijuana Use In Teens Correlates To Decreasing IQ

retroworks writes "The BBC reports on a paper published in the U.S.'s Proceedings of the National Academy of Sciences showing a correlation between persistent, regular cannabis use and risk of lower IQ. The study finds the risk particularly correlates use of cannabis by teenagers who use the drug "four times a week year after year." The more people smoked, the greater the loss in IQ. Reviewers of the study at King's College Institute of Psychiatry states that the data and methodology are exceptional, but she also cautions that there may be another explanation, such as depression, which could lower IQ while stimulating marijuana use. The study does not mention or rule out 'nocebo' effects, i.e. just feeling stupid for spending your teens hanging out with potheads."

11 of 626 comments (clear)

  1. Ya buddy by Metabolife · · Score: 4, Funny

    I was gonna go to class, before I got high
    I coulda' cheated and I coulda passed, but I got high
    I'm taking it next semester and I know why, (why man) 'cuz I got high
    Because I got high
    Because I got high

  2. As `The Dude` would say by Anonymous Coward · · Score: 5, Funny

    Yeah, well, that's just, like, your opinion, man.

  3. Re:News Flash by Anonymous Coward · · Score: 5, Funny

    It affects reading comprehension also....

  4. Re:Mods by jeffmeden · · Score: 5, Funny

    Propaganda by whom, and for what purpose? How do you identify it as propaganda instead of legitimate science? You have to answer these basic questions and support your answers with evidence before anybody is going to buy into your conspiracy theories.

    Propaganda; n. Any material which proposes to sway a reader to form a conclusion that conflicts with your own.

  5. Re:News Flash by Anonymous Coward · · Score: 2, Funny

    If it makes you less intelligent, it probably makes you happier too. Ignorance is, after all, bliss.

  6. Re:Mods by Anonymous Coward · · Score: 2, Funny

    we should trust the experts, just like we do with the Climate Change.

    no one elses opinions matter

  7. Re:Legalise all drugs by Joce640k · · Score: 4, Funny

    "at work"?

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  8. Re:News Flash by crakbone · · Score: 3, Funny

    I was more worried about your indiscriminate fork use.

  9. Re:News Flash by KingMotley · · Score: 2, Funny

    So by your argument, pretty much anything I use in my daily life would become a "sign of addition"

    No, anything you do in your daily life, and then decide to do something *extra* would become a "sign of addition".

  10. Re:Confounding by Hatta · · Score: 4, Funny

    There are a couple of striking things: the percentage of males jumps markedly as the regularity of cannabis use goes up

    Holy crap, smoking pot turns females into males!

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  11. Re:Science vs. propaganda by tobiah · · Score: 5, Funny

    Perhaps it's just that low IQ is correlated with answering "yes" on a marijuana survey.

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    "The ability to delude yourself may be an important survival tool" - Jane Wagner -