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Politics : Foreign Affairs Discussion Group

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To: Wharf Rat who wrote (238112)7/28/2007 9:59:07 AM
From: jlallen  Read Replies (2) of 281500
 
Marijuana use boosts risk of psychosis: study
Last Updated: Thursday, December 2, 2004 | 2:52 PM ET
CBC News
Teens and young adults who frequently use marijuana are at higher risk of developing psychotic symptoms later in life, researchers say.
Dutch scientists studied 2,437 young people aged 14-24 to identify their predisposition to psychosis. Participants were questioned about their use of cannabis and followed for up to four years.

INDEPTH: Marijuana

In the study, researchers used a broad definition of psychosis, ranging from occasionally hearing voices and paranoia to schizophrenia.

Jim van Os of the University of Maastricht in the Netherlands and his team found 21 per cent of cannabis users had experienced psychotic symptoms compared with 15 per cent among non-users.

The odds of experiencing symptoms were also higher among those who frequently smoked marijuana, after adjusting for other factors, such as social and economic status, use of other drugs, alcohol and tobacco.

cbc.ca
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