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Psychotic symptoms more likely with cannabis
NewScientist.com ^ | 4 Decemer 2004 | New Scientist

Posted on 12/01/2004 1:38:50 PM PST by DouglasKC

Psychotic symptoms more likely with cannabis

16:58 01 December 04

NewScientist.com news service

Using marijuana in adolescence and early adulthood can cause psychotic symptoms later in life, a new study suggests. The risk of developing these symptoms is “moderate”, say researchers, though is higher in people with a pre-disposition to psychosis.

Up to a third of people develop signs of psychosis at some point during their lives and several studies have already linked cannabis use with psychotic symptoms. But it is often difficult to decipher whether cannabis really triggers psychotic symptoms - such as hearing voices and paranoia - or whether people with mental health problems are more likely to “self medicate” and use cannabis.

A team led by Jim van Os of the University of Maastricht in the Netherlands followed 2437 people aged between 14 and 24. After four years, 21% of cannabis users had experienced psychotic symptoms compared with 15% of non-users. And the more a participant used cannabis, the more likely they were to develop symptoms.

Family history

The risk appears greatest for those with a predisposition to psychosis, as evidenced by mild signs of psychosis at the outset of the study. Within this group - about one-tenth of the total - 51% of users experienced symptoms compared with 26% of non-users.

he definition of psychosis used in the study was very broad, including occasional symptoms that would not require hospitalisation. Even so, van Os thinks the results have public health implications. “If you have a personal or family history of mental illness, you’re at risk of negative effects of cannabis smoking,” he says.

Martin Barnes, chief executive of DrugScope in the UK, agrees: "Frequent use, a predisposition to mental health problems and starting at an early age all increase the risk of adverse effects. This research underlines that there are potentially serious health risks associated with cannabis use, particularly for young people.”

Robin Murray of the Institute of Psychiatry in London, UK, notes that cannabis smoking accounts for about 8% of serious cases of psychosis.


TOPICS: Crime/Corruption; Culture/Society
KEYWORDS: 1960sstateofmind; disorders; dope; dopeheads; dopers; dopesmokers; druggies; drugs; friedbrains; liberalitarians; liberals; libertarians; oldhippies; pot; potheads; stupid; teenagewasteland; treehugging; wod; wodlist
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Comment #61 Removed by Moderator

To: PaxMacian
I can grow hundreds of herbs and flowers in my own garden all of which have an effect on the human body in one way or another. Some have medicinal properties. Some which I am permitted to grow have portions that are deadly if ingested at all and others if in too high a quantity. Why is it that this particular herb which pre-existed this nation upon this land is so different that it falls under the jurisdiction of the commerce clause?

Because anything that George Soros is for, we should be against...

62 posted on 12/01/2004 4:25:02 PM PST by DouglasKC
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Comment #63 Removed by Moderator

To: Nick Danger

Your code requires a call to the system, which is costly in terms of overhead. C# provides better mechanisms.


64 posted on 12/01/2004 4:28:23 PM PST by Lazamataz ("Stay well - Stay safe - Stay armed - Yorktown" -- harpseal)
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To: Lazamataz

As The Sage has told us, "There are many ways to delete, but only one true path to /dev/null."


65 posted on 12/01/2004 4:37:41 PM PST by Nick Danger (What, now they're smoking SAGE?)
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To: kingsurfer

Good afternoon.

Wasn't there a band in the Santa Cruz area during the seventies called "Stoned Butterfly" As I remember they folded because they couldn't get it together enough to make it to gigs.

Michael Frazier


66 posted on 12/01/2004 4:50:17 PM PST by brazzaville (No surrender no retreat, Well, maybe retreat's ok.)
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To: sawmill trash

pot is illegal??


67 posted on 12/01/2004 4:57:52 PM PST by notigar
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To: DouglasKC

Libertarians are living proof of this!


68 posted on 12/01/2004 5:15:35 PM PST by Lurking2Long
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To: Spann_Tillman

Thanks, I like to think of it as my pallette.


69 posted on 12/01/2004 10:47:23 PM PST by PaxMacian (Gen 1:29)
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To: humblegunner; Xenalyte

True, true. Similarly combining it with The Osbournes can result in uncontrollable laughter.


70 posted on 12/02/2004 6:06:58 AM PST by Bacon Man (Everyone thinks it's funny until someone gets hurt. Then it's hilarious!)
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To: kingsurfer
I t can also be used ot make clothes, paper etc etc

I already stated that. Heaven forbid you potheads should actually READ.

71 posted on 12/02/2004 2:27:51 PM PST by KiloLima (www.opgratitude.com = Give, you will feel better.)
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To: PaxMacian

Delusions are a feature of psychosis.


72 posted on 12/02/2004 2:30:25 PM PST by KiloLima (www.opgratitude.com = Give, you will feel better.)
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To: Sender

What? You want to inject cannabis into your face?! Don't do it!


73 posted on 12/02/2004 2:31:31 PM PST by KiloLima (www.opgratitude.com = Give, you will feel better.)
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To: KiloLima

Can I just inject cannabis into my face until I need glasses?


74 posted on 12/02/2004 3:00:58 PM PST by Sender (Team Infidel USA)
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