Swiss kids and weed....

Researchers found that marijuana-only users had the following characteristics:

— More likely to be male (71.6 percent marijuana smokers versus 59.7 percent of teens who used tobacco and marijuana)

— Play sports (85.5 percent vs. 66.7 percent of tobacco and marijuana)

— Live with both parents (78.2 percent vs. 68.3 percent of tobacco and marijuana)

— Have good grades (77.5 percent vs. 66.6 percent of tobacco and marijuana)

Cannabis-only smokers were also less likely to have been drunk in the past 30 days, less likely to use cannabis before the age of 15 and less likely to use marijuana more than once or twice in the past 30 days. They were also less likely to use other illegal drugs, compared to students who used both substances, researchers found.

“The gateway theory hypothesizes that the use of legal drugs (tobacco and alcohol) is the previous step to cannabis consumption,” the authors wrote. “However, recent research also indicates that cannabis use may precede or be simultaneous to tobacco use and that, in fact, its use may reinforce cigarette smoking or lead to nicotine addiction independently of smoking status. In any case, and even though they do not seem to have great personal, family, or academic problems, the situation of those adolescents who use cannabis but who declare not using tobacco should not be trivialized.”

In comparison to students who abstained from both substances, marijuana-only smokers were:

— More likely to be male (71.6 percent cannabis users vs. 47.7 percent of teens who abstained)

— Have a good relationship with friends (87 percent vs. 83.2 percent)

— Be sensation-seeking (37.8 percent vs. 21.8 percent)

— Play sports (85.5 percent vs. 76.6 percent)

— Less likely to have a good relationship with their parents (74.1 percent vs. 82.4 percent)

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