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 Toxicología al día: Young adult sequelae of adolescent cannabis use: an integrative analysis

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Hoja de marihuana (Foto: Sertox )

Daily cannabis users less likely to finish high school. unsw.edu.au. September 09 , 2014. A large UNSW-led meta-analysis in The Lancet Psychiatry shows frequent cannabis use in adolescence is linked with reduced educational attainment by as much as 60% and other problems in young adults.The analysis also indicates people who use cannabis daily during adolescence are seven times more likely to attempt suicide, have an 18 times greater chance of cannabis dependence and are eight times as likely to use other illicit drugs in later life.


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“Our findings are particularly timely given that several US states and countries in Latin America have made moves to decriminalise or legalise cannabis, raising the possibility that the drug might become more accessible to young people”, says Richard Mattick, study author and professor of drug and alcohol studies at the National Drug and Alcohol Research Centre at UNSW.

Cannabis is the most widely used illicit drug globally and recent statistics have shown that in some countries adolescents are starting cannabis use at a younger age and more adolescents are using cannabis heavily. In England, 4% of 11–15 year olds report cannabis use in the past month, roughly 7% of US high-school seniors are daily or near-daily cannabis users, and in Australia, around 1% of 14–19 year olds are daily users of the drug, while 4% use weekly.

In this study, a team of Australian and New Zealand researchers combined individual-level data on up to 3,765 participants who used cannabis from three large, long-running longitudinal studies to find out more about the link between the frequency of cannabis use before the age of 17 years and seven developmental outcomes up to the age of 30 (completing high school, obtaining a university degree, cannabis dependence, use of other illicit drugs, suicide attempt, depression, and welfare dependence).

The researchers recorded clear and consistent associations between frequency of cannabis use during adolescence and most young adult outcomes investigated, even after controlling for 53 potential confounding factors including age, sex, ethnicity, socioeconomic status, use of other drugs, and mental illness. Importantly, they also noted that the risks increased relative to dose, with daily cannabis users showing the strongest effects.

According to the study’s lead author, Dr Edmund Silins, “Our results provide strong evidence that the prevention or delay of cannabis use is likely to have broad health and social benefits. Efforts to reform cannabis legislation should be carefully assessed to ensure they reduce adolescent cannabis use and prevent potentially adverse effects on adolescent development.”


Media contcat: For interviews with Dr Edmund Silins or Professor Richard Mattick, National Drug and Alcohol Research Centre, UNSW Australia, Sydney, Australia, please phone Marion Downey on +61 02 9385 0333.

Journal reference: Edmund Silins,  L John Horwood, George C Patton et al. Young adult sequelae of adolescent cannabis use: an integrative analysis. The Lancet Psychiatry, Volume 1, Issue 4, Pages 286 - 293, September 2014 doi:10.1016/S2215-0366(14)70307-4

Enviado por jcp el 12 septiembre 2014 00:00:00 (12904 Lecturas)






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 Artículos y Textos Científicos
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 Drogas: Marihuana / Cannabis
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