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heavy dope use lowers iq...

djcheezwhiz

TRIBE Member
TORONTO (CP) -- It seems Hollywood isn't wrong when it portrays stoners as, well, dumb.

Heavy marijuana use does seem to drive down the IQ, by an average of four points, researchers from Carleton University report in Tuesday's issue of the Canadian Medical Association Journal.

The good news? The decline appears to right itself if the dope smoker butts out.

"A negative effect was not observed among subjects who had previously been heavy users but were no longer using the substance," the researchers wrote.

"We conclude that marijuana does not have a long-term negative impact on global intelligence."

The issue of whether marijuana use has an impact on IQ is a contentious one.

"It's been very controversial," said lead author Peter Fried of Carleton's psychology department. "There have been about 50 studies that have looked at the issue of if there's a residual effect and it's pretty much 50-50."

Resolving the issue has been tough, he said, because of the difficulty of coming up with before and after pictures of each subject's IQ.

About half the studies compared subjects' IQs while under the influence to their IQ after several days of enforced abstinence. But is a few days enough time to ensure the drug has cleared the system and all its neurological effects have worn off?

Fried and his colleagues had a neat answer to the problem. Since 1978, they have been following a group of children whose mothers -- some marijuana users, some not -- enrolled in the Ottawa Prenatal Prospective Study. These children are now aged 17 to 20.

To study the effect of marijuana on IQ, they studied a subset of 70 young adults, comparing current IQ scores to those on file from the subjects' pre-teen days.

"We had the unique opportunity, because of our long-term study, to have IQ measures on these kids before they ever knew the word marijuana," Fried said from Ottawa.

Subjects were asked whether they used the drug and if they did whether their use was light or heavy. Urine samples were analysed to ensure the subjects were being honest about their marijuana use.

Nine of the subjects were light current users and another nine were former marijuana users who had smoked regularly in the past but hadn't used the drug for at least three months. Fifteen were heavy current users and 37 were non-users who had never used the drug on a regular basis.

Current heavy users showed a decline in IQ of 4.1 points, which is in the range of the decrease seen among children whose mothers drank three drinks of alcohol a day while pregnant or who used cocaine during their pregnancy.

But the decrease was not seen among former heavy users.

"This lack of a negative impact among the former heavy users is striking as they smoked, on average, an estimated 5,793 joints over 3.2 years (mean of 37 joints per week); in contrast, the current heavy users had smoked, on average, an estimated 2,386 joints over 3.1 years (mean of 14 joints per week)," the article said.

"Certainly in a low-risk sample -- that's another thing to emphasize -- which these young adults are, it does look like the deficit in IQ, if the people stay clean for three months or so is recoverable," Fried added.

While the results are positive news for recreational marijuana users, he cautioned the findings are preliminary. His team is still studying the subjects to see if there is any impact on attention, memory or other mental functions.

As well, it's not clear the findings can be generalized across the full spectrum of marijuana users. These subjects are middle class with above-average intelligence, kids who don't regularly use other drugs and who are well nourished. The drug's long-term impact might not be the same on someone with a riskier lifestyle, Fried said.

"In the real world out there of course the heavy users probably are poly-drug users, etc. And they may be at a greater risk and their IQ may not recover."

Furthermore, Fried said it would be a leap to conclude that because IQ recovers in young adults who have used marijuana for a few years, 40- and 50-year olds who've been smoking dope for decades can count on the same recovery.
 

Gizmo

TRIBE Member
Originally posted by djcheezwhiz
in contrast, the current heavy users had smoked, on average, an estimated 2,386 joints over 3.1 years (mean of 14 joints per week)," the article said.

d'oh!
 
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redeyes

TRIBE Member
Originally posted by djcheezwhiz
TORONTO (CP) --

on average, an estimated 5,793 joints over 3.2 years (mean of 37 joints per week);
my bestfriend can kill 37 joints a week. he smokes more thank 1/2 ounce a week no problem. he lost all motivation to do anything except play playstation. i'm glad i'm not chronic anymore.

peace
 

redeyes

TRIBE Member
Originally posted by Cheeka
^^^ that's not fun... does he even enjoy it anymore???!!!
I wouldn't!
good question, to him it seems more like a way of life. he won't do anything anymore unless he can burn. i used to be the same way but not that bad. when you cut down, you enjoy it much more then you did before. also, it's easier getting up in the morning and your short-term memory goes back to normal. back to my friend, i think he does it more to escape reality. he's seems stuck in a bad relationship with somebody 10 years older than him and he just had a kid.
 
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kuba

TRIBE Member
Originally posted by mingster
You can't blame lack of motivation on pot smoking.
It's just an excuse.
Ming.
On one hand I agree BUT having seen myself be so unmotivated after days of weedfests I think that weed has some effect on killing ones motivation. Some may use it as an excuse but the effect of the drug -- laziness, tiredness etc -- all lead to not wanting to do anything but sit in your car and eat 12 mcnuggets and down a coke in under 1 minute.

Shades of Sunday Night.
 

CIRCE (Sir C)

TRIBE Member
"You can't blame lack of motivation on pot smoking. It's just an excuse"

Word to that...smoking doobage kills motivation like alcohol encourages sexual assault and violence.
 

redeyes

TRIBE Member
Originally posted by mingster
You can't blame lack of motivation on pot smoking.
It's just an excuse.

Ming.
you're right. but, i think certain people get all their priorities fucked up.(especially my friends) and they don't take care of their shit because they're burnouts. i used to be chronic but i still took care of school and work. pot should be a recreational activity, not a way of life.

peace
 

mingster

TRIBE Member
Originally posted by redeyes
you're right. but, i think certain people get all their priorities fucked up.(especially my friends) and they don't take care of their shit because they're burnouts.
That's something within them. It isn't the weed.

See following statement...
i used to be chronic but i still took care of school and work. pot should be a recreational activity, not a way of life.
I know someone who works better after she smokes weed.
Pipe up, Nattie!

Ming.
 
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BreakzBroad

TRIBE Member
well i still know my name.......i still know where i live.......i still know how to count, and i still can walk!

I think im going to smoke a joint right now :D

*jen*
 

KillaLadY

TRIBE Member
Ok... alcohol lowers your IQ too and alcohol is legal... there are other things that lower your IQ.

So whatever!
 
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