04-16-2014, 08:32 AM
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Purveyor, Fine Asian Porn
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Join Date: Jul 2004
Location: San Francisco Bay Area
Posts: 38,323
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From the actual study (not a newspaper article):
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This preliminary study has several caveats. First, the sample size does not provide power to examine complex interactions such as sex differences. Because this is a cross-sectional study, causation cannot be determined, although marijuana exposure parametrically correlated with structural differences, which suggests the possibility of causation.
Longitudinal studies are needed to determine whether marijuana exposure explicitly leads to the differences observed in this study.
Furthermore, this study did not include quantifiable marijuana metabolite levels, which would have provided further information about the amount of marijuana exposure. This measure could be incorporated into future studies as a complementary measure to detailed timeline follow-back measures of drug use.
Finally, age of onset was collected for marijuana use only. Early exposure to alcohol may have also affected brain structure.
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"Marijuana participants were not excluded if they had used other illegal drugs in the past;"
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Some comments from readers:
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A tiny study, not a statistically valid sample, plus it is questionable if strict experimental and scientific rigor was maintained. In short it hardly seems worth reporting on, and reporting this "study" without any appropriate scrutiny or critical examination may actually be a public disservice. Very disappointing article in the broader context of what should constitute good journalism, or even good non-fiction writing.
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Seems to me someone wrote this post trying to get a negative vibe of marijuana, they kind of dance around the science trying to make it sound bad.
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"In the brains of marijuana users, natural rewards are less satisfying."
Words from the reporter, not quoted from scientist conducting the study or supported by conclusions in the study summary.
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What a bunch of pseudo-academic silliness.
Saying that a behavior causes morphological changes (physical appearance) is one thing. Going on to say that "a little recreational use shouldn?t cause a problem, if someone is doing OK with work or school...Our data directly says this is not the case" is hogwash akin to phrenology. The size of bumps on the skull or in the brain is relevant. Is the person happy? Productive? Less stressed-out? Those are the things that matter.
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From what I read this is not science but BS. No real data; no real controls, just another waste of our tax dollars.
Also nobody has any real idea of what different parts of the brain do. It could be that the smokers will be better off then the nonsmokers. This does not seem to be research.
Maybe we should ask the President or the Jr Senator from Ky, since all pot heads are the same and ruined for life; oh wait that's a lie...
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Music: It's in your head, changing your brain
"I think there's enough evidence to say that musical experience, musical exposure, musical training, all of those things change your brain," says Dr. Charles Limb, associate professor of otolaryngology and head and neck surgery at Johns Hopkins University.
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Get out of here with such a small sample size. Increase the sample size 100 fold then data may be legit!
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The research was supported by grants 14118, 026002, 35 026104, 027804 and 034093 from the National Institute on Drug Abuse, and grant 052368 from the National Institute of Neurological Disorders and Stroke, all of the National Institutes of Health. The Office of National Drug Control Policy and Northwestern Medicine's Warren Wright Adolescent Center also supported the research.
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This is truly high science...
"Because the study was retrospective, researchers did not know the THC content of the marijuana, which can range from 5 to 9 percent or even higher in the currently available drug."
"With the findings of these two papers," Breiter said, "I've developed a severe worry about whether we should be allowing anybody under age 30 to use pot unless they have a terminal illness and need it for pain."
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