Teenage Pot Smoking Linked To Future IQ Decrease

August 28, 2012


Starting to smoke pot regularly before you're 18 may be linked to a permanent decrease in adult IQ, according to a recent study performed in New Zealand. Truthfully, you probably shouldn't be REGULARLY smoking too much reefer before you graduate high school anyways. What are you, buying that shit with your allowance? "When did you start?" DO AS I SAY, NOT AS I DO. So much regret.

More than 1,000 study participants from New Zealand were tested for IQ at age 13 - likely before any significant marijuana use - and again at age 38.

In addition to IQ tests, participants were given five interviews between ages 18 and 38, including questions related to their marijuana use.

Researchers compared their IQ scores at age 13 to the score at age 38 and found a drop only in those who had started regularly smoking pot by 18. Those deemed marijuana-dependent in three or more surveys had a drop averaging 8 points. If a person had average intelligence and was smarter than 50 percent of the population, dropping 8 points would give them a score only higher than 29 percent of the population, the researchers said.

Among participants who'd been dependent at 18 and in at least one later survey, quitting didn't remove the problem. IQ declines showed up even if they'd largely or entirely quit using pot at age 38, analysis showed.

Admittedly, the study doesn't sound too conclusive, but I wouldn't be surprised if the results are accurate. I was actually a drug testing operative for the government for part of my youth, and look at me -- I am DUMB. My IQ's probably half of what it was at 13. Another six points lower and I should be good. "You're crazy!" Am I? Or is ignorance bliss? *drooling* "Do you...?" Need a wet nap? Yes.

Thanks to Zach, creeper and Whatever, who are having a real hard time caring.

  • Taylor

    duuur if you do any drugs your duuur... I guess the smart thing to do is slave for a rich man, sounds satisfying, couple that with being self centered and what a life man i wish i had this guys uncreative human slave life.

    OP you sound intelligent...er more like arrogant.

  • Steve Peak

    What lowers your IQ is having no passion... no interest. Just don't let weed dominate your life and be what everything revolves around. Do shit with your time. Have passions and inspirations. That's the real issue. Don't let your medicine become your crutch.

  • ZomBBombeR

    I agree with this study in that I don't believe people 16 and under should be using pot regularly, and that people under 16 shouldn't even be thinking about trying it yet, for instance I had a friend in grade 7 who smoked up daily, ask me what he's up to now and I don't have one good answer for you, little kids just gotta stop thinking that smoking magically turns you into a thug, and that being a thug in general is a good thing, if that mentality ceases so will use among youth.

  • Justice Law

    Considering it says that they are smoking the cannabis. I wonder how these results would hold up for a person who uses a vaporizer.

  • Guest

    Its got nothin' on alcohol. *points to the related article*
    I don't have anything against the occasional beverage....it's only bad with abuse...

    I can assume that teenagers go for the booze much more often than the baggies....just sayin'

  • "Future IQ Decrease"? I assumed this was already in effect.

  • Shaun9lives

    Anecdotal evidence, but I know many successful, very high functioning, adult pot users. However, most kids I know who smoked weed a lot in their teens turned out to be your stereotypical lazy, unmotivated, losers.

    This study seems to back up my non-scientific observations.

    My two cents? Don't smoke weed while your brain is still developing, but legalize marijauna for adults 21 and over. (Before someone says it, yes, I know your brains is still developing at 21, but other studies haven't shown these kind of negative affects for adult users, and, frankly, you have to draw the line somewhere. So why not use an already established delineation?)

  • jimmy

    I think the real picture is, if your a teenager, you likely to do alot of weed and get addicted. If your an adult, then you may only do it now and again, and not be addicted

  • Jim M Schimmelpfennig

    it's not addictive.. you can't become dependent .. educate yourself before you go and look like a fool

  • Michael Heskett

    you can become dependent, the addiction rate is incredibly low but it is possible

    people who generally become addicted to marijuana are those people who have extremely addictive tendencies and personalities. it usually isnt an issue for the majority of the population though

  • JJtoob

    I have yet to meet a pot smoker who acts eloquently. It's good to know at least they won't die of cancer. :rollseyes:

  • James Mcelroy

    Yeah but the study is from New Zealand, that's in the southern hemisphere, according to my research, in the northern hemisphere, water swirls the other way, and IQs go up with every blunt you smoke. It's scientific and legit. I promise.

  • Ollie Williams

    This is such a complete misrepresentation of cannabis use, the researchers must be high themselves to think anyone is going to buy this drivel. The drop in IQ could easily be affected by so many other factors in life, schooling, and social interaction, there is absolutely no way a study like this could be taken seriously. Unless you have identical people with identical life experiences who do and do not use cannabis, this entire "research" project is a flop.

  • Guest

    8 people will probably live wasted lives.

  • BillGatesIsYourDaddy

    Not every cannabis user has a low IQ....but anyone with a low IQ most likely uses some sort of drug including alcohol.

  • ZomBBombeR

    Pretty much the point I was gonna make. thanks man.

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