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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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Drugs = Crazy
1 posted on 12/01/2004 1:38:52 PM PST by DouglasKC
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To: DouglasKC

Wish someone would forward this article to Bill Bennett since he was talking about this subject this morning on his radio show.


2 posted on 12/01/2004 1:40:09 PM PST by lilylangtree (Veni, Vidi, Vici)
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To: DouglasKC

Using marijuana in adolescence and early adulthood can lead to listening to horrible music.


3 posted on 12/01/2004 1:40:17 PM PST by escapefromboston (manny ortez: mvp)
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To: DouglasKC
Psychotic symptoms more likely with cannabis

Don't look now, but the dope-smoking Liberalitarians are going to be all over you like white on rice for posting this. Same goes for the self-medicating potheads.

4 posted on 12/01/2004 1:41:01 PM PST by Prime Choice (I like Democrats, too. Let's exchange recipes.)
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To: DouglasKC

"Psychotic symptoms more likely with cannabis ."

Hence the modern Democratic party.


5 posted on 12/01/2004 1:42:00 PM PST by MisterRepublican ("I must go. I must be elusive.")
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To: DouglasKC
whether people with mental health problems are more likely to “self medicate” and use cannabis.

I think this is an important question to answer. That way, those poor people can get the help they need to become productive, responsible citizens.

6 posted on 12/01/2004 1:43:03 PM PST by Chemist_Geek ("Drill, R&D, and conserve" should be our watchwords! Energy independence for America!)
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To: DouglasKC
Within this group - about one-tenth of the total - 51% of users experienced symptoms compared with 26% of non-users.

I'd be willing to bet that those non-users weren't drinkers either... or sex-addicts.

I'd be willing to bet that about 1/10th or 10% of the population has a so-called "addictive personality" whether it's marijuana, alcohol, crack, meth, heroin, sex, music, gambling... etc.
7 posted on 12/01/2004 1:43:22 PM PST by gotmatt
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To: DouglasKC

Reefer Madness was right after all!


8 posted on 12/01/2004 1:43:57 PM PST by Little Pig (Is it time for "Cowboys and Muslims" yet?)
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To: DouglasKC
Lemme tell ya .....if you just horsed down a nice dube of Hawaiian & then decide to rob the 7-11 around the corner? It's over 2 seconds after you see a bunch of......

Munchies override Psychotic, EVERYTIME

9 posted on 12/01/2004 1:44:05 PM PST by Puppage (You may disagree with what I have to say, but I shall defend to your death my right to say it)
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To: DouglasKC
Breaking news...

10 posted on 12/01/2004 1:45:33 PM PST by evets (God bless president George W. Bush)
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To: DouglasKC

Uh-oh! Now the pot idiots are going to show up.


11 posted on 12/01/2004 1:46:46 PM PST by Bullish
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To: DouglasKC

So this explains MrLeRoy.


12 posted on 12/01/2004 1:47:07 PM PST by AxelPaulsenJr (Pray Daily For Our Troops and President Bush)
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To: DouglasKC

This is just plain stupid.
No causal evidence exists.
The fact of the matter is
psychotics have been known
to have a greater predilection toward
illegal drugs of all types.
The puritannical tyrants pull this
out of their hats perennially.


13 posted on 12/01/2004 1:47:40 PM PST by PaxMacian (Gen 1:29)
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To: DouglasKC

I heard voices looooong before I started getting baked.


14 posted on 12/01/2004 1:47:51 PM PST by Psycho_Bunny (“I know a great deal about the Middle East because I’ve been raising Arabian horses" Patrick Swazey)
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To: Bullish

No, it's too late in the afternoon, by now they have overdosed on Twinkies.


15 posted on 12/01/2004 1:48:17 PM PST by AxelPaulsenJr (Pray Daily For Our Troops and President Bush)
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To: DouglasKC

I get psychotic when I don't have any weed.


16 posted on 12/01/2004 1:48:29 PM PST by lugsoul (Until at last I threw down my enemy and smote his ruin on the mountainside.)
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To: Prime Choice
Don't look now, but the dope-smoking Liberalitarians are going to be all over you like white on rice for posting this. Same goes for the self-medicating potheads.

Kind of proves the point, though, doesn't it?

Teehee!

17 posted on 12/01/2004 1:49:14 PM PST by atomicpossum (I am the Cat that walks by himself, and all places are alike to me.)
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To: DouglasKC
Frequent use, a predisposition to mental health problems and starting at an early age all increase the risk of adverse effects

I don't think anyone whould argue with that. How about letting recreational use by heatly adults be permitted then. You know, like we do for alcohol. Frequent use of Alcohol, predisposition to mental disorders and drinking at an early age increases adverse effects too.

18 posted on 12/01/2004 1:49:53 PM PST by bird4four4
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To: AxelPaulsenJr

Or they're still out looking to score some weed.


19 posted on 12/01/2004 1:50:47 PM PST by Bullish
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To: PaxMacian
This is just plain stupid.No causal evidence exists.

I'm just reporting the news...

20 posted on 12/01/2004 1:52:34 PM PST by DouglasKC
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