While it may seem a question of semantics, there’s a big difference between decriminalizing and legalizing marijuana. And our kids’ health could be at stake if we blur the lines.
The
federal government is planning to legalize marijuana, making it akin to
alcohol and tobacco — a legal but regulated substance that’s kept away
from youth. The Task Force on Marijuana Legalization and Regulation is
asking for your opinion on the best way to do this, and Monday is the
last day to give your input.
I’ve studied
the effects of drugs on health for many years — as well as how drug
policy decisions affect use. And I think legalizing marijuana now will
be bad for our kids’ health.
Legalization
is reasonable in theory, but if you take a closer look — both at our
failure to curb underaged drinking, and at early findings about
marijuana use in places where it’s been legalized — it raises troubling
questions.
First of all, alcohol regulation
is not the most reassuring model. Our attempts to prohibit underage
drinking have been far from successful. A recent study found that 74 per
cent of Grade 12 students in Ontario report drinking alcohol in the
past year — and 20 per cent reported binge-drinking in the past month.
Impaired driving is also a major problem for this age group, too often
with fatal results.
Just as we haven’t
figured out how to stop kids from drinking alcohol, we don’t yet know
how to deter them from smoking pot. One thing that has been shown to
help, however, is attitudes based on accurate knowledge about its health
effects. Kids who are aware of health risks tend to avoid marijuana.
It being illegal also seems to deter at least some people.
While we can’t make any definitive conclusions yet, early figures in
Colorado suggest marijuana use has gone up substantially after
legalization. But it hasn’t gone up in places like Australia, Portugal
and certain U.S. states, where marijuana has been decriminalized but not
legalized — where simple possession of the drug doesn’t result in a
criminal record, but selling it remains illegal. This seems to show that
most people are influenced by the fact that society deems the drug to
be unsafe.
We have to remember that medical
use and nonmedical use are really separate issues. Yes, marijuana has
some medicinal properties, such as relief of pain, nausea and vomiting,
and stimulation of appetite, and it has a legitimate place in health
care — just as opiates, stimulants and many other drugs do.
But we
distinguish between medical and nonmedical uses for those drugs, and
there’s no reason we can’t do the same for marijuana. It can continue to
be used as a prescription drug, even if we don’t legalize nonmedical
use until we know how to keep it out of the hands of kids and teenagers.
One
of the most disturbing effects of marijuana is its actions on kids’
developing brains. In a major study in New Zealand, researchers followed
over 1,000 newborns through childhood, adolescence and into middle age.
Those who started smoking marijuana early, at around 12 years old, and
continued the habit into their adult years had a decreased IQ later in
life. The same effect was not found for those who started using the drug
as adults.
We’ve found similar results in
experimental studies in the lab. Cannabis prevents nerve pathways from
maturing in areas of the brain known to be involved in “executive
functioning.” This maturing process occurs in our adolescent years, and
helps us with planning, reasoning, problem-solving and decision-making.
In the New Zealand study, this was reflected among the early users in
poor school performance, higher dropout rates and reduced career
achievement — even when controlled for socioeconomic status and other
potential confounding factors.
To me, this
is the most worrisome risk of marijuana. There are also, of course,
concerns about accidents, respiratory problems and other health issues.
After all, smoke is smoke. We don’t have a clear answer about lung
cancer yet, and the fact that many people who smoke marijuana also smoke
tobacco makes it hard to determine. But the detrimental effect on the
developing brain shouldn’t be taken lightly when youngsters make up
about 40 per cent of users.
We can still
use and study marijuana as medication. We can decriminalize possession,
to reduce the social harm suffered by those convicted for simple
possession, while watching carefully what happens in places that have
already legalized. And we can do much-needed research on how to make
kids more aware of the risks of early use. The government would stand to
benefit from increased tax revenue by legalizing sale (even if the
black market would not be wiped out, as youth would still rely on
unofficial sellers).
But if legalization
threatens to increase marijuana use among adolescents, the group most at
risk of long-term harm, that should give us pause.
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