Illicit substance use among Canadian youth: trends between 2002 and 2008

Substance use among youth is associated with a range of immediate and long-term health risks. The current study sought to characterize early patterns of illicit drug use among Canadian youth.

Nationally representative surveys were conducted in 2002 (n = 11,757), 2004 (n = 16,705), 2006 (n = 27,030), and 2008 (n = 24,752) with students in grades 7 to 9 as part of Health Canada's Youth Smoking Survey (YSS). In 2008, students in grades 10-12 were also included in the survey (n = 20,673).

In 2008, approximately 21% of youth in grades 7-9 reported drinking at least once a month in the past year, 26% reported previous tobacco use, 17% reported trying cannabis, while 13% reported trying another substance, including glue, non-medical use of prescription drugs, hallucinogens, and amphetamines. Compared to 2006, the number of youth in grades 7-9 who reported ever trying glue decreased significantly in 2008, whereas those who reported ever trying MDMA and non-medical use of prescription drugs had increased. Males were significantly more likely to report use for most but not all substances across survey years.

A considerable portion of Canadians aged 13 to 15 reported experimenting with illegal substances. The findings provide the most comprehensive national trends in substance use among young Canadians.