Researchers have rightly noted that people who have try marijuana are statistically more likely try other illicit drugs. This gave raise to the theory that there was something about marijuana that encouraged drug experimentation. Marijuana, it was alleged, is a gateway drug. This, in turn, was given as one more reason to keep the drug illegal.However, the gateway drug theory has until recently fallen on hard times for lack of an intelligible mechanism. The problem was that there was no coherent explanation for why marijuana would lead people to experiment with other drugs. Without this explanation doubt was cast relationship being more than mere correlation.That said, in recent years researchers have breathed new life into the theory, albeit with a sociological twist. According to the new version, it is not marijuana's pharmacological properties that serve as a gateway, but rather marijuana's illegal status. Specifically in the process of illegally procuring marijuana, users are introduced to the criminal elements with access to other illicit drugs and hence it is the forged blackmarket relationship between dealer and buyer that serves as gateway. Ironically the gateway drug theory has been turned on its head and used as reason for legalizing the drug. The Canadian Senate employed the new and improved version of the gateway argument as a reason for legalizing the drug.
In this context it should be noted that when the Dutch partially legalized the sale of marijuana, heroin and cocaine use went down despite an initial increase in marijuana use. Dutch use of hard drugs remains well below the European average.
Potent pot is more is more myth than reality.
However, even if one assumes that potent pot is a reality it is certainly nothing to be concerned about. Indeed, saying that potent pot is reason for keeping marijuana illegal is akin to saying that alcohol should be banned because gin has higher alcohol content than beer. It makes no sense. The pharmacological affects of consuming 1 "chemically supercharged" joint, as various US attorneys like to say, versus x number of "dad's joints" would be no different if the amount of THC consumed is the same. As for consumption, just as people do not drink the same volume of gin as beer, the higher the THC level in pot the less people consume. Hence, ironically more potent pot may be a welcome development. After all, one of the most prominent health effect related to marijuana, if not the most, is that it is usually smoked. The more potent the pot, the less people have to smoke to achieve the same high. Lester Grinspoon of Harvard Medical School concurs, so does Mitch Earleywine of the University of Southern California and so does UCLA's Mark Kleiman.
That said, if potency is the concern, then it should be legalized. After all, the only way to regulate the potency of pot is to legalize it. Moreover, so long as the drug is illegal, producers will seek to increase potency. The higher the potency the smaller the package the smaller the package the less likely they will get caught.
Finally, the attempt to scare parents that have grown up on marijuana by distinguishing between potent pot and “your dad's marijuana” is too clever by half. After all, it begs the following question. If today's marijuana is truly different in kind from "dads marijuana", would it be ok to legalize "dad's marijuana", i.e., low potency pot?
Epidemiological studies have consistently failed to show a positive correlation between marijuana use and schizophrenia and there is no causation without correlation. Specifically, should there be a causal link between marijuana and schizophrenia, there should be a positive correlation between marijuana consumption and schizophrenia, but such a correlation is conspicuous by its absence. Despite a massive increase in the number of Australians consuming the drug since the 1960s, Wayne Hall of the University of Queensland found no increase in the number of cases of schizophrenia in Australia. Mitch Earleywine of the University of Southern California similarly found the same with regard to the US population and Oxford's Leslie Iversen found the same regard to the population in the UK. According to Dr. Alan Brown, a professor of psychiatry and epidemiology at Columbia University,
"If anything, the studies seem to show a possible decline in schizophrenia from the '40s and the ‘ 50,"
Much of the evidence linking marijuana to schizophrenia suggests not that it causes schizophrenia but rather that it may cause the earlier onset of symptoms in people who would sooner or later develop schizophrenia. Much to Gordan Brown's dismay, this is opinion of Dr Iddon.
Dr Iddon, the chairman of the all-party parliamentary group on drugs misuse [Britain], said the study did not convince him it was time to return cannabis to class B. "I don't think the causal link has been proved. I think cannabis might - possibly for genetic reasons - trigger psychosis at an earlier age." The MP, who is also a member of the science and technology select committee, said there was a danger of criminalising "hundreds of thousands of young people" if the status of the drug was changed. "If Gordon Brown changes the class of the drug, it won't be evidence-based but for political reasons," he said.
Most people in drug treatment in Ontario are there because they abuse hard drugs. Only a small percentage, 13% in 2005, are there because of marijuana. Furthermore, those that are there for marijuana differ from other people in treatment, in so far as they are much more likely to be there because of outside pressure. Not surprisingly the typical person in "treatment" for marijuana use in Ontario is a single teenage male who is still in high school.
Ontario is not unique. Despite the fact that number of marijuana users in Western world positively dwarfs of the number of people using hard drugs, in most Western countries the vast majority of people in drug treatment are there because they abuse hard drugs. The notable exception is the US. The vast majority of people in drug treatment in the US are there because they purportedly abuse marijuana. Why the difference? Well, the majority (70%) of those in treatment for marijuana, including many casual users and even some first to users, are there because they have been given a choice, "treatment" or jail. In fact, the rise in the number of admissions for treatment correlates perfectly with a rise in the number of arrests for possession. In true Orwellian fashion, the former Drug Czar cited these figures as evidence that other countries need to get tough on drugs.