http://www.pnas.org/content/early/2012/08/22/1206820109.abstract
“Persistent cannabis use was associated with neuropsychological decline broadly across domains of functioning, even after controlling for years of education.”
poikilotherm said:
http://www.pnas.org/content/early/2012/08/22/1206820109.abstract“Persistent cannabis use was associated with neuropsychological decline broadly across domains of functioning, even after controlling for years of education.”
tell about it..
what is ‘persistent’?
every day? twice a day?
Arts said:
what is ‘persistent’?every day? twice a day?
NFI, have to pay for the full article.
One of those authors has done a lot of research into childhood influences on adult gambling.
the purpose of cannibis is to the destroy the critical thinking of the population
I’d still like to see how this result was concluded..
“Twelve-year-olds in Australia are more likely to have smoked a joint than a cigarette,” he said.
http://www.abc.net.au/news/2012-08-28/cannabis-use/4227420
Teenagers who become dependent on cannabis may pay for it in adulthood with a significantly lower IQ, according to a long-term New Zealand study.
A team led by Dr Madeline Meier of Duke University, in the US, compared participants’ IQs at age 13, before any cannabis use, with their IQ 25 years later.
The results appear in the Proceedings of the National Academy of Sciences.
Tracking 1,037 people born in Dunedin in 1972/3, they interviewed participants at 18, 21, 26, 32 and 38 years and recorded whether they were dependent on cannabis at the time.
People who were cannabis-dependent at 18 had lower IQs at age 38 and the IQ fall was most severe if they remained dependent into early adulthood, dropping by an average of eight IQ points.
The authors say for a person starting with average intelligence (IQ of 100), an eight-point fall would put them in the bottom 30 per cent of the population.
As expected, when tracking a cohort of the general population, only a small number (52) became cannabis-dependent in their teens, but they showed deficits across a wide range of IQ tests, the authors said.
Importantly, a further 92 people became cannabis-dependent as adults, but they did not show a significant IQ drop, suggesting the detrimental effect is specific to cannabis use during adolescence.
The authors were able to rule out alcohol, hard drugs, recent cannabis use and tobacco as being responsible for the IQ decline.
And although cannabis users tend to drop out of school, lack of education was also excluded as a cause.
Adolescent brain ‘vulnerable’
Dr Meier says because the brain is undergoing important critical developmental changes from adolescence through the early 20s, she suspects cannabis use is damaging at this crucial time.
“I think the study shows that cannabis use in adolescence can have long-term effects on mental abilities,” she said.
Dr Meier advises adolescents not to use it because their brains are “vulnerable and still developing”.
She says if people are determined to use it, we should be concentrating on delaying use until adulthood.
Commenting on the study, Dr Matthew Large of the University of New South Wales School of Psychiatry endorsed the research.
“You don’t get any better information than this,” he said, adding that it was a large and well-conducted study.
“It adds to a growing body of knowledge that cannabis is not an entirely benign compound,” Dr Large said.
He says we need to be informed about the potential consequences of its use, particularly as it is popular among adolescents.
“Twelve-year-olds in Australia are more likely to have smoked a joint than a cigarette,” he said.
Divine Angel said:
http://www.abc.net.au/news/2012-08-28/cannabis-use/4227420Teenagers who become dependent on cannabis may pay for it in adulthood with a significantly lower IQ, according to a long-term New Zealand study.
A team led by Dr Madeline Meier of Duke University, in the US, compared participants’ IQs at age 13, before any cannabis use, with their IQ 25 years later.
The results appear in the Proceedings of the National Academy of Sciences.
Tracking 1,037 people born in Dunedin in 1972/3, they interviewed participants at 18, 21, 26, 32 and 38 years and recorded whether they were dependent on cannabis at the time.
People who were cannabis-dependent at 18 had lower IQs at age 38 and the IQ fall was most severe if they remained dependent into early adulthood, dropping by an average of eight IQ points.
The authors say for a person starting with average intelligence (IQ of 100), an eight-point fall would put them in the bottom 30 per cent of the population.
As expected, when tracking a cohort of the general population, only a small number (52) became cannabis-dependent in their teens, but they showed deficits across a wide range of IQ tests, the authors said.
Importantly, a further 92 people became cannabis-dependent as adults, but they did not show a significant IQ drop, suggesting the detrimental effect is specific to cannabis use during adolescence.
The authors were able to rule out alcohol, hard drugs, recent cannabis use and tobacco as being responsible for the IQ decline.
And although cannabis users tend to drop out of school, lack of education was also excluded as a cause.
Adolescent brain ‘vulnerable’Dr Meier says because the brain is undergoing important critical developmental changes from adolescence through the early 20s, she suspects cannabis use is damaging at this crucial time.
“I think the study shows that cannabis use in adolescence can have long-term effects on mental abilities,” she said.
Dr Meier advises adolescents not to use it because their brains are “vulnerable and still developing”.
She says if people are determined to use it, we should be concentrating on delaying use until adulthood.
Commenting on the study, Dr Matthew Large of the University of New South Wales School of Psychiatry endorsed the research.
“You don’t get any better information than this,” he said, adding that it was a large and well-conducted study.
“It adds to a growing body of knowledge that cannabis is not an entirely benign compound,” Dr Large said.
He says we need to be informed about the potential consequences of its use, particularly as it is popular among adolescents.
“Twelve-year-olds in Australia are more likely to have smoked a joint than a cigarette,” he said.
morrie said:
I can’t concentrate well enough to read that set of single line text and comprehend it at the same time. :(
This disturbing fashion of one sentence = one paragraph seems to have crept up on us.
Geoff D said:
morrie said:I can’t concentrate well enough to read that set of single line text and comprehend it at the same time. :(
This disturbing fashion of one sentence = one paragraph seems to have crept up on us.
>>Teenagers who become dependent on cannabis may pay for it in adulthood
Sort of like a HECS scheme.
Ermahgerd – my knees ache like crazy! And I just had a wild craving for some garlic and ginger beetroot wedges I bought months ago at some country fruit shop. No idea whether the two things are linked in any way.
Fwed wong. Sowwy