http://bmj.bmjjournals.com/cgi/content/extract/332/7535/197-b
"The chance of Dutch teenagers using hard drugs later in life is six times greater among those who use cannabis than among those who don't. This is the conclusion of a study from Amsterdam's Free University. Preventing teenagers under 18 using cannabis can be important in ensuring that they don't move to hard drugs later. The study casts doubt on one of the main arguments underpinning the tolerant policy towards cannabis in the Netherlands. This policy is designed to separate the markets of soft and hard drugs, thus protecting cannabis users from the criminal environment of hard drugs. "
Early Onset Cannabis Use and Progression to other Drug Use in a Sample of Dutch Twins / Behavior Genetics
Michael T. Lynskey1, 3 , Jacqueline M. Vink2 and Dorret I. Boomsma2 - [Sub Required]
