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Friday, November 25, 2016

Marketplace Tests Today's Marijuana and Finds It Very Dangerous for Under 25s

What's in your pot? Marketplace tests today's weed

As Ottawa prepares to legalize recreational marijuana, Marketplace investigation shows how weed has changed

By Tyana Grundig and David Common, CBC News 

    Marijuana is still illegal in Canada, but there’s been a proliferation of shops that allow people to
    walk in off the street and buy the product for medical or recreational purpose
    (Ron Ward/Canadian Press)

Marijuana legalization is looming in Canada, but what's in today's weed — and what isn't — may surprise you.

CBC's Marketplace looked into the marijuana market ahead of the legalization of recreational pot, which is expected to be introduced through legislation in spring 2017 and to take effect in 2018.

When producers visited seven Toronto dispensaries and collected 12 of the most popular marijuana strains, laboratory test results showed average THC levels of around 20 per cent. THC is the active ingredient that provides pot's high.

Some strains reached as high at 30 per cent THC, much higher than pot in the 1970s, when levels in Canada hovered between two to eight per cent, according to Jonathan Page, an adjunct professor of botany at the University of British Columbia.

Study after study points to the attributes of combining THC and CBD. The science isn't settled, but  research suggests CBD can mitigate some of the negative effects that can happen with high-THC weed, including anxiety, paranoia, and psychosis.

CBD is also the focus of much research on possible medicinal benefits in treating everything from childhood epilepsy to schizophrenia and arthritis.

Dr. Steven Laviolette says teenagers are particularly at risk when it comes to marijuana use, especially when it comes to high-THC pot. (Marketplace/CBC)

Dr. Steven Laviolette, a neuroscientist and one of Canada's top researchers into the effects of marijuana on the brain, says the lab findings are cause for alarm.

"There's basically nothing to put a brake on the psychological and neurophysical effects," he says of the findings.

Laviolette, who is based out of Western University in London, Ont., has spent 12 years researching the effect of marijuana chemicals on the brains and behaviours of adolescent rats. He found that when the teenage rat brain is exposed to high THC levels, it can produce paranoia, or even schizophrenia-like symptoms in the animals. CBD, however, can reverse schizophrenia-like symptoms, according to his research.

Buying pot on the spot

The Toronto-area dispensaries whose products Marketplace tested were chosen at random, but each of the selected shops allowed customers to buy marijuana on the spot.

Several locations had the veneer of medical dispensaries, with many requiring customers to fill out medical history forms. One location described itself as a recreational dispensary and only required proof of age to enter. Like all the other dispensaries Marketplace visited, the minimum age at that shop was 19.

Marijuana dispensaries in Canada are operating illegally, but are widespread.

Marketplace bought whichever strains came recommended as popular by store staff or other customers.

The samples were sent to an accredited lab to test for THC and CBD levels.

Half of the samples (six strains) came labelled with their THC content — ranging from 13 to 23 per cent. One sample included a CBD percentage, listed at one per cent.

Testing showed that many of the labels were not accurate; only two of the labelled samples fell within one percentage point of what was listed. And many of the samples contained more THC than listed.

For example, one sample said it contained 13 per cent THC, but testing showed it contained 18 per cent. Another sample contained only half of what was promised. Of the unlabelled samples, THC content ranged between 15 and 30 per cent.

None of the samples contained a detectable level of CBD

Will 'high-potency' products be regulated?

Dr. Mark Ware, an associate professor of family medicine and anesthesia at McGill University who is serving as vice-chair of the federal task force on the legalization and regulation of marijuana,  says there's some suggestion that cannabis has been bred to boost THC levels and push down CBD levels.

Some suggestion? Hello?

Northwoods Ministries: Does Pot make you Crazy?
'Skunk-Like Cannabis' Increases Risk of Psychosis by 3 to 5 Times
More Research on the Dangerous Effects of Marijuana on the Brain
Northwoods Ministries: Pot, Schizophrenia, and The Truth
Northwoods Ministries: Playing Russian Roulette with Your Sanity

CBD, he notes, "hasn't been of interest to the recreational market or growers because it doesn't cause that euphoric potential.

Ware, who thinks more research is needed on the interaction between THC and CBD, says in a "perfect world" buyers would have access to a "sort of fingerprint of every cannabis molecule, every cannabis product."

"Just like the list of ingredients that you have in a good product."

When asked whether he thinks CBD should be in all marijuana, he says he's interested to see how "CBD and THC levels play out in a recreational, non-medical framework." But he says it's "way too early to recommend" to make it a requirement, citing the need for a better understanding of cannabidiol.

Then it is way too early to legalize marijuana.

Health Canada told Marketplace in an email that the task force has been asked to advise on whether there should be limits on THC potency, or on "high-potency" marijuana products.

The task force has yet to release its recommendations.

"But we've talked about regulating the ingredients of the product so that people know what's in it, regulating the potency, regulating the quality," says Ware, who also directs clinical research at a pain management unit at McGill in Montreal.

How to decide who is old enough to buy?

Also on the legalization task force's agenda? The minimum age to buy legal marijuana, which is expected to be between 19 and 25.

Most scientists now agree that critical brain development continues to age 25.

Setting the age at 25 might send a message to some teens that there is a problem with developing brains and pot. Setting it at 18 or 19 is just confirmation in the teenage mind that there is nothing wrong with it. Of course, most teens will ignore the warning, but the few who are bright enough to listen might just save their own sanity.

Laviolette says there will surely be quibbles about what the exact minimum age should be, but he cautions that teenagers are particularly vulnerable.

Ware, the task force member, agrees that marijuana can be harmful to the developing brain, and argues that legislation can help.

"Regulation includes education," he says, and will offer both young people — and adults— a better understanding of what's known about marijuana use, and what science is still trying to sort out.

Education - like that's going to help teens make better decisions as to what pot products to use. Most teens will go for whatever makes them the highest without regard for whether or not there is an increased risk of sheer madness. Teens are gamblers and risks are part of the fun. 

Why would we expect teens to make good decisions about pot when we have dozens of adults shooting themselves up on the streets of Vancouver with cocaine laced with fentanyl or car-fentanyl and overdosing to the point where they need emergency treatment within minutes to keep them alive? Pop musician Prince died from a fentanyl overdose. When it comes to drugs, education and common sense have no part.

Between January and September, at least 332 overdose deaths in Vancouver were linked to fentanyl, according to the British Columbia Coroners Service. That’s a 196 per cent increase from the same period in 2015 –- and emergency response crews fear the problem is getting worse.

On Thursday, fire hall No. 2 received 15 calls for overdoses within a three-hour period.

There are volunteer groups administering naloxone, an antidote for fentanyl overdosing, and there are temporary 'safe injection sites' popping up in east Vancouver because the permanent sites are all full to overflowing. This is more than just a drug problem, it's a serious, even catastrophic societal problem, and I'm hard pressed to see how the government is doing anything but making it worse.

Watch the full Marketplace investigation into marijuana