Cannabis addiction

Does Cannabis Lead to Addiction of Crack or Heroin

Does cannabis addiction lead to taking other drugs ?This article is reproduced with permission from Drug Scope. The article and other information about drugs are available on the Drug Scope website: 

This is the so-called ‘escalation’ hypothesis, or ‘gateway theory’. In the mid-80s research from the US revived interest in this idea; specifically it was claimed that cannabis use tends to lead to heroin use, but the arguments are similar for progression to illicit drugs other than heroin. 

Most people who use heroin will have previously used cannabis (though only a small proportion of those who try cannabis go on to use heroin). This could be because cannabis actually does (at least for some people) lead to heroin use or addiction, but there are alternative explanations.

For instance, it could be that heroin and cannabis use are both caused by something else in the individual’s personality or background that the researchers have not taken into account. Also the studies suggesting cannabis might lead to heroin have been done in Western societies at a time when cannabis is more freely available than heroin. This could mean people tend to use cannabis first simply because they come across it first. 

Cannabis addiction

Even if cannabis use did lead to heroin use, there would remain the crucial issue of exactly how this happened. The assumption is that if cannabis leads to heroin, then more cannabis use would result in more heroin use – an argument against legalising cannabis. But the reverse could be the case. For instance, it could be that cannabis use involves people in the buying of illegal drugs, making it more likely that they will meet with an offer of heroin, an offer which some will accept. In this example it would be the illegality of cannabis use rather than cannabis use itself that led most directly to heroin use. The implication is that some heroin use might be prevented by legalising cannabis, even if this meant more widespread cannabis use. 

This example illustrates the fact that the mechanism of any link between cannabis and heroin may be as important as whether or not such a link exists in the first place. 

Recently a government report has concluded that cannabis does not lead to the use of other drugs. The report by the Home Office states that any gateway factors, where cannabis is seen as the gateway to other drugs, are “too small to be a major factor”. The report The Road to Ruin? found that drug use is a consequence of lifestyle, of which cannabis, because it is more available, tends to be the first drug people encounter.

The choice to take drugs like cocaine is a consequence of a person’s predisposition to seeking and using drugs, not because they have taken any one type of drug.



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