Cannabis: it matters how young you start - Researchers find that boys who start smoking pot before 15 are much more likely to have a drug problem at 28 than those who start at 15 or after, according to new research (n=1,030) in the Canadian Journal of Psychiatry.

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Cannabis: it matters how young you start - Researchers find that boys who start smoking pot before 15 are much more likely to have a drug problem at 28 than those who start at 15 or after, according to new research (n=1,030) in the Canadian Journal of Psychiatry.