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Teenagers Who Smoke Cannabis Damage Their Brains for LIFE and may be more likely to develop schizophrenia

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My Comment:  I don’t know what disturbs me more, the fact that teens are smoking this or the fact that they had to do a study on it.  It’s been proven in the past that using this drug destroys brain cells, yet they have encouraged this by legalizing it.  Now we’re paying the price.  And it’s a high price to pay, our children’s lives should carry more weight with us, instead of setting examples of not partaking in drug use, we encourage it.  More evidence of the breakdown of the family and the fall into an immoral society.

Daily Mail

Teenagers who regularly smoke cannabis suffer long lasting brain damage and are in much greater danger of developing schizophrenia.

American researchers say the drug is particularly dangerous for a group of people who have agenetic susceptibility to the mental health disorder – and it could be the trigger for it.

Asaf Keller, of the University of Maryland School of Medicine, said the results highlight the dangers of teenagers smoking cannabis during their formative years.

The study found that even short-term exposure to cannabis impaired brain activity, with the damage continuing into adulthood

The study, published in the journal Neuropsychopharmacology, exposed young mice to the active ingredient in marijuana for 20 days.

It found that their brain activity was impaired, with the damage continuing into adulthood.

The past 20 years has seen major controversy about the long-term effects of marijuana, with experts divided over its long-term effects on teenagers.

Previous research has shown that children who started using marijuana before the age of 16 are at greater risk of permanent brain damage, and have a significantly higher incidence of psychiatric disorders.

‘Adolescence is the critical period during which marijuana use can be damaging,’ said the study’s lead author, Sylvina Mullins Raver, a PhD candidate at the University of Maryland School of Medicine.

‘We wanted to identify the biological underpinnings and determine whether there is a real, permanent health risk to marijuana use.’

The scientists began by examining cortical oscillations in mice. Cortical oscillations are patterns of the activity of neurons in the brain and are believed to underlie the brain’s various functions.

These oscillations are very abnormal in schizophrenia and in other psychiatric disorders.

VIDEO: Scientists explain how cannabis damages the teenage brain

The scientists exposed young mice to very low doses of the active ingredient in marijuana for 20 days, and then allowed them to return to their siblings and develop normally.

‘In the adult mice exposed to marijuana ingredients in adolescence, we found that cortical oscillations were grossly altered, and they exhibited impaired cognitive abilities,’ said Raver.

‘We also found impaired cognitive behavioural performance in those mice. The striking finding is that, even though the mice were exposed to very low drug doses, and only for a brief period during adolescence, their brain abnormalities persisted into adulthood.’

The scientists repeated the experiment, this time giving marijuana to adult mice that had never been exposed to the drug before.

According to the research team, there is a group of people who have a genetic susceptibility to developing schizophrenia. Adding weed to the mix during adolescence could be the trigger that causes it to develop, permanently impairing brain function and cognition

Their cortical oscillations and ability to perform cognitive tasks remained normal, indicating that it was only drug exposure during the critical teenage years that impaired brain activity.

‘We found that the frontal cortex is much more affected by the drugs during adolescence,’ said Keller.
‘This is the area of the brain controls executive functions such as planning and impulse control. It is also the area most affected in schizophrenia.’

Keller now wants to know whether the effects can be reversed. ‘We are hoping we will learn more about schizophrenia and other psychiatric disorders, which are complicated conditions,’ he said.

‘These cognitive symptoms are not affected by medication, but they might be affected by controlling these cortical oscillations.’


A separate study by Imperial College London last month revealed that long-term use of cannabis destroys dopamine, the feel-good chemical in the brain that inspires a spirit of get-up-and-go.

Previous research has suggested taking marijuana can lead to individuals becoming withdrawn, lethargic and apathetic.

The cannabis users in the study published in Biological Psychiatry had all experienced psychotic-like symptoms while smoking the drug such as strange sensations or having feelings of paranoia.

The researchers expected their dopamine production might be higher since this has been linked with psychosis – but instead found the opposite.

The cannabis users had their first experience with the drug between the ages of 12 and 18 and the researchers believe the drug could be the cause of the difference in dopamine levels.

‘Cannabis is an illegal drug and there is mounting evidence the idea of it being a harmless herb is not true,’ said Dr Michael Bloomfield, of Imperial College London.

‘When people stop taking cannabis it seems the brain can slowly go back to producing pretty normal levels of dopamine.

‘Cannabis has effects on the brain and it’s important people can make an informed decision.’

Filed under: Teens/Kids, US News Tagged: marijuana use in teens

Vine of Life News, your premier Christian news source.


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    Total 42 comments
    • Purpleooze

      Is this a joke?

      • Rad

        White-skinned MONSTERS Drug Laws were made so the pig can have on his person the ‘dope’ to put in the black man’s pocket, then arrest him, ransack his house, steal his stuff, screw his wife by threat of his arrest (‘screw me and I will help your black man’, says the evil u.s. of Terror white-skinned judeo.chris.scum.dumb following pig), and put the black man into a corporately owned private prison that THE PIGS’ ‘Pension Plan” invests in!

        White-skinned euro male MONSTERS ARE infected with the ‘not’ from this planet ‘Enoch’ gene. As the book of babble says, Giants layed with earth women, and when the white-skinned female could survive the mating and child birth acts, the result is the inhuman VIOLENT western leaders you have today!

        DNA testing must be done on every one of the ‘Enoch-tainted’ humans in the euro-caucasian race of ‘genetically polluted’ white-skinned inhuman MONSTERS!

        You have a very pale white-skinned (from inbreeding) hybrid human species that is ‘feeding” on you. And I do NOT mean “making a lot of money” off you, and living the high life of materialism, which most of you aspire for yourselves.

        White-skinned idiot MONSTERS ‘willingly’ will hand over their children to a well known world wide CRIMINAL gang that specializes in Pedophile, called the roman catholic church.

        Adolf Hitler is another white-skinned Monster educated by the roman catholic world wide pedophile crime gang. Hitler was a worshiper of the Prince of Peace! Hitler was just a good catholic boy. Raised roman catholic! The third reich celebrated christmas! Look at the early color photo’s of that good christian lad hitler and his friends!
        Life magazine color photos!

        White-skinned idiot MONSTER ‘people’ poison each others food and drink for a free kin ‘LIVING’! They call it ‘for profit’!

        They are ‘brain-washed from birth’ MALE war-mongering creeps that ‘believe’ just about anything they are told by their zionist infected 4 major media outlets.!

        Their religions are ‘business covers’ for world crime rings, specializing in providing children for their demonic pedophile ceremonies and ‘pleasure’. They also launder money from drug trafficking.

        Their governments specialize in democide, and have killed, among themselves, in the 10’s of millions just during the 1900’s alone.

        White-skinned MONSTERS allow their own ‘precious troops’ to be poisoned in mass by depleted uranium munitions.

        White-skinned MONSTERS ‘money’ is, literally, created out of ‘thin air’ by a ‘very few banks’ owned by private individuals, not their governments. The vast majority of White-skinned MONSTERS do not know this.

        White-skinned MONSTERS institutions of higher learning are really, a ‘never-get-out-of-debt’ con game, administered against those below the ‘legal age’ of 18, with a special provision that it cannot be ‘shed’ using bankruptcy laws, like all other debt!

        White-skinned MONSTERS invented the 3 monolithic ALL MALE war-mongering ‘religions’. judeo.chris.scum.dumb or muscle.scum, they all come from the same “curse of abraham” a demonic book of brainwashing called the “old testament”.

        • g-man

          take a chill pill you racist moron

    • Anonymous

      Reefer madness revival and still nonsense. Always remember to include a “maybe” when spinning a big one.

    • Fianna

      It took me a few to recover from laughing so hard….. please stop, please stop, my ribs are killing me!!! :lol: :lol: :lol: :lol:

    • Solar Max

      I am getting tired of scientist using animal to human comparisons. OK so it happened in mice so lets write a bunch of policy. Boy I wish I could do something about bureaucrats and politicians. Lets feed them some Monsanto corn and see what happens!

    • fuzzy696

      Somebody give this guy more money for research……or just get him stoned for awhile,seems to me…..wait ahhhhh thats better,gotta read a book and drink a beer ….later.

      • Rad

        The evil member of chris.scum.dumb who provided this HATE piece OF PURE, UNADULTERATED LIES hates itself and you, too.

        Rad will help you poor, lost amerikans to ‘De-tox’ yourself of the very real radiation that is on its way to you now!
        In very strong doses!
        Look at my little map, see all the pretty colors?
        See the “very dark red”?
        How come you do not hear this on your favorite WAR-MONGER news channel Fox? (or, whatever?)

        The whole world knows, except for ‘well-conditioned’, believing fools here, in the u.s. of medical terror.
        Search on CBD, the ‘miracle’ cannabinoid!

        The Drug,


        in a Nasal spray

        Manufactured by a U.K. company called:
        GW Pharmaceuticals

        is available to you in Canada right now.

        You cannot have your u.s. doctor “prescribe” it, cause it is
        “licensed” but not approved by the FDA as of today in the u.s.

        Also, search on Hemp Oil, produce here, in the us of Medical terror now.
        It is ingested, NOT smoked.

    • Theron

      Government propaganda much?
      I see your fake study and raise.
      A real study

      Marijuana protects from Alzheimers.

    • bigtoe1111
      • bigtoe1111


    • AmbrociousXP
    • chris from oz

      It’s another corporate sponsored hit piece to demonize and categorize into one general term “drugs” or “pot” or “cannabis” or “weed”. There are over 200 different varieties of this incredible and useful plant. It’s got literally hundreds of different medical uses alone (before you get into the paper, textile, fuel, food, environmental restoration it provides).

      These ‘studies’ never go into any detail about the type of “cannabis” they’re using, just shlapping up that one dullard term for it and hoping the docile masses won’t cotton on. The cancer industry would evaporate overnight if the human race knew they could grow the cure for it and a litany of other diseases for free in their own backyard. Hemp has a 50,000 year history of being one the most remarkable and beneficial plants ever to be used by the human race. The Napoleonic wars were fought over the hemp routes by sea, it used to be illegal to NOT grow it in Kentucky (or Kansas was it?), as it was considered a precious industrial crop. The truth tsunami is coming on this issue, and articles like this reek of utter desperation by big pharma to try and keep a lid on it a bit longer. Follow the money.

      What those kids are getting stoned on isn’t this plant. It’s a mockery of nature, grown in awful secret conditions (because of those profitable drug laws) and filled with artificial chemicals and fertilizers and then smoked, which is the most inefficient and hazardous (due to the chemicals and methods used) way to get it in. These kids are also often drinking along with smoking this junk, partying hard with those self destructive teenager attitudes, dumbed down by an education system that threw us all overboard decades ago, apathetic and hopeless about their futures and living like they’ve got nothing left to lose. You really think smoking a bit of weed is the only thing that might be affecting their development? it’s probably the one thing keeping them sane…

      Check out the Guzman Institute in New Mexico – they’ve been studying it for over a decade. You won’t see their research in any corporate media articles though. Truth isn’t profitable.

      Why does the US government hold the patent on the specific compound of the cannabis plant that cures cancer?

    • Anonymous

      American physicians are prescribing Prozac to THREE-YEAR-OLD children because they are ‘depressed’. Maybe cannabis is used to numb the pain of living in a police state run by stupid fat people.

    • Jay

      Ah yes the pot heads come out in force to defend the right to be drugged and controlled. The reverse psychology the Tavistock Institute employed in the 1950′s and 60′s has worked out better then they could have ever dreamed. And yes that toothpick your sucking on has caused more family problems and criminal behavior then the liberal press will ever let you know about. Marijuana is a gateway drug almost all drug addicts started out experimenting with it and the culture that condones it. Only a fool would defend getting high as a lifestyle choice. What right thinking person would let a Surgeon high on Marijuana operate on them or would you allow your next babysitter to watch your child while smoking that wonder drug. I don’t think so, at least I hope not. Do I think it should be decriminalized, yes but it should be labeled with a skull and cross bones on it. Like every green thing under the sun there is legitimate uses for it, getting high isn’t one of them. A good starting point is seeing what you really look like to the rest of us high on that crap. Check out the movie “Up in Smoke” and see if there is any similarities in your life. Then think about defending that wonderful “Herb”.

      • Rad


        Go drink a diet coke, scarf down some microwaved GMO’d POISON, (you call your ‘chemical crap-storm’ daily diet ‘food’), have a double alcohol poison scotch, and SUFFER a very, very, long and painful death of cancers!

        I am investing in us of Medical Terror pharma stocks to PROFIT off of truly detestable people, like you, you are, already “dropping like flies”!, as they ‘believe’ their very evil doctors advice to under go treatments of POISON (radiation and chemical) to ‘sometimes’ ‘cure’ the cancer!

      • fuzzy696

        OK SAINT JAY… don,t fight you make love not war,I take it you never smoked a doob or knived some hash.If you haven,t don,t comment on something you know nothing about or felt the relaxing serene effects the drug can do….think about this…GOD made cannabis-man made beer ….who do you trust.

      • Anonymous

        I would like to nominate this post for “Stoopid Post Of The Year” award.

      • Anonymous

        So all those cultures that smoked it for thousands of years are all hooked on crack, dope and meth now, without any influence from their invaders?

      • Pix

        “Marijuana is a gateway drug…”

        Er, no actually it isn’t. Cannabis isn’t addictive. And there are no cases of death as a result from taking it. Not that I condone drugs, but in this case it dose not turn women into prostitutes or make you jump out of windows laughing hysterically, as claimed by government propaganda health warnings from the 60′s.

        Why would you put a scull and cross bones on a substance that has caused no deaths? More people have drowned by accidentally breathing in tea instead of swallowing it.


    • fliprock

      ya it should read Drinking Alcohol …

      when they going to ban drinking ?????

      never see a smoker cause a bar fight..

      and this list i could keep going ..

      Kepp your BS to your self PFFFFF

    • Pix

      This has actually been disproven. Teenagers who are already suffering from schizophrenia are susceptible to triggering an episode if they take cannabis.

      Having said that it can be very disruptive if over used, turning the studious into zombies with a long list of failed exams and thus destroying their future ability to gain worth while employment. It’s heartbreaking to watch.

      • fuzzy696

        Actually after studying all those hours….would make them sleep like a baby….take it you never smoked the stuff.

        • Pix

          Just about everyone has I reckon. I eat some when I go to Amsterdam, it’s legal there. I can’t afford to get caught with it, I would lose my job. It’s fine in moderation if you don’t have anything important to do, ie in the evening is fine. Most teenagers take too much of everything, they don’t know when to say enough is enough. Like drinking a bottle of wine before sitting an exam, they doom themselves to failure. It should be legalised but with an age restriction of age 21. Most people have finished college/uni. by then.

    • Jay

      Ah yes Reefer madness strikes again thank you for proving my point Pot Head. I was wrong about legalizing the substance. The laws will remain on the books and those that break the law will have to suffer the consequences. You have proven they are necessary. And there is nothing you can do to change them. Have a nice day in La la land and scream all you want I won’t be returning to this site. I have better things to do then to talk to addle brained drug addicts.

      • Turntheflagupsidedown

        Wow Jay, you really hate pot don’t ya. What’s the matter, did your uncle smoke a JAY before he molested you? Go crawl back under the dog turd you came from you knuckle dragging mouth breather.

    • resonator

      I heard the same thing when I was a teenager. It still isn’t true.

    • TC

      Wondering why Obama is such an idiot? Here’s a medical explanation.

    • itsjustme

      How ’bout this. Marijuana is the only drug that helps thwart/prevent MK ultra and MJ-12 mind control techniques. No wonder “they” don’t want people to smoke marijuana.

    • Anonymous

      Rubbish. Kids who smoke weed and watch the CFRtv and do not do their homework end up losers. Do your homework and projects FIRST, kids. I personally, have smoked weed with a three of the top ten founders of Microsoft and students in college who were 3.9 GPA or better, who ended up happily married with a broad understanding of life in general. If you want to avoid brain damage, kill your television set, nail some ‘A’ grades and invent something. THEN, go ahead and burn some crip, but not until.

    • justiceday

      Take a good long look at this story and this guy! His parents did pot then let their kids do it! Then the military enlisted him with a drug record and allowed him to continue to do drugs!

      • Cautious Gautious

        Wooden the study be more accurate if it had been conducted on sheep instead of mice ?

        Just sayin’

    • Anonymous

      I do not smoke that stuff anymore, but I really do not think it led me to harder drugs or made me more paranoid, unless I smoked it. Some people can’t handle certain kinds of pot should be the title of the research paper. Funny though. :lol:

    • lostpuppy

      And alcohol is still ok….pot doesn’t kill you, but being drunk can.

      If you wreck your car while stoned…you might have to get a new paint job, if you wreck your car from might need a new car, or be responsible for killing another person…

      So even if this study was in any way accurate…it is not by the way….I would still smoke pot before drinking.

      I can regain brain cells…I can not regain a life I took while being so smart as to socially drink and then drive.

      Poo poo on your gov. War on drugs, terror, whatever they want to claim war on, they should be disbanded and never be allowed to work in service for people ever again.

    • sten

      Abusive over use of any hallucigent will end up with long term consequences. The paranoia over pot is just that, total paranoia.

    • Anonymous

      Drugs are for losers. The UK study proves it.

    • kjbaran

      Cannabis destroys your “get up and go”? They dont mention how it fuels your “be still, and know that I AM God.”

      • resonator


    • desertspeaks

      the so called study has a fatal flaw, it PRESUMES the schizophrenia wasn’t already present in the individuals PRIOR to consuming the EVIL DRUG!
      This is just more propaganda and demonization by the institutional government control freaks!

    • LifeIs

      (1) What is a “cognitively impaired mouse,” exactly. (2) How much interpretation of squiggles on paper is required to find statistically significant “oscillations.” (3) There is a huge leap between anything you see in a mouse, and a schizophrenic human.

      (4) We don’t know if the dopamine levels of the long-term users of marijuana were caused by marijuana. Maybe low dopamine levels make you crave marijuana. (5) Apathy and lethargy have many, many causes. (6) The description of “apathetic” and “lethargic” for a functioning person is subjective. (7) If neurotransmitter levels were the problem in schizophrenia, the disease would have been CURED by medications that alter neurotransmitter levels.

      (8) Marijuana has numerous uses in medicine. Anti-nausea. Appetite stimulation. Glaucoma treatment. Cancer treatment.

      (9) We have no way of knowing how honest or dishonest these researchers are, anyway. Prohibition serves political purposes, it justifies law enforcement budgets, it keeps prices high for the profit of gangsters, it justifies police-state tactics.

    • RMS

      WOW! After reading the article, I did about 2 hours research on this study. I’m not a Mary Jane activist, but prefer the facts over everything.
      First of all, I believe that teenagers should not use any form of “recreational” chemicals what-so-ever.
      I don’t seem to understand why this research study singled out Mary Jane. But after seeing who and where it was posted from, gave me my first clue.
      The poster’s comments don’t make sense, and are one-sided. Has anyone, who’s a parent, ever drank a “cold one” in front of your kids, like at a BBQ or at the beach? The poster’s comments insinuate that an adult parent, would be a dirt bag, taking hits off a bong, in front of their kids.
      How do you explain drinking a cold one to your kids? It’s the same with Mary Jane, if one chooses to use it in front of their kids? Which, if smoked, they shouldn’t.
      The poster also said that Marijuana has been proven to destroy brain cells, really? But gave no proof.
      Here’s an article from the “new Scientist” website that says recent research suggests Mary Jane may actually help to regenerate brain cells…………..

      Are the results from this study inferior to the study cited by this article?

      The article, as posted, left out a paragraph or two about the results…….
      “The scientists repeated the experiment, this time administering marijuana ingredients to adult mice that had never been exposed to the drug before. Their cortical oscillations and ability to perform cognitive behavioral tasks remained normal, indicating that it was only drug
      exposure during the critical period of adolescence that impaired cognition through this mechanism.”
      Here’s the URL……….

      This research study indicates that teens who are “predisposed to genetic risks for schizophrenia”, and smoke Mary Jane are at risk. Ok, that’s logical, makes sense, but if you Google the risk of alcohol use by teens and the link to schizophrenia and violence, it is much worse.

      How about those teens that “huff”?

      So to say that teens, who have genetic risks for schizophrenia, who smoke Mary Jane, is like “demonizing” peanuts for those who have a predisposition for peanut allergies.

      I’m just asking, but why was Mary Jane singled out among the more dangerous threats to teens? Could it be because a couple of states have legalized it, and there are those, including “Big Pharma” that oppose it?
      Marijuana has been found to have many medical benefits. Here is one example…………….

      What about the poisonous anti-depressants being given to children? These have horrifying side effects, both mentally and physical. Warnings of suicide? Yep, for those under 18. These poisons have also been linked to certain individuals involved in “mass-murder”. Google it.
      So the results of this study, linking Mary Jane to teen schizophrenia, is no different than linking peanuts to those who may have peanut allergies.
      Is the “point” of this research, that teens shouldn’t use Mary Jane, or that we should not “legalize” it?
      Read between the lines.

      BTW, to those whose comments involve religion, this has nothing to do with spirituality or religion. Who created Mary Jane for the benefit of humanity? It was the Great Spirit. It’s man’s laws, and ideologies that are harming humans.
      To those spouting off crap, that no one can understand, did you forget to take your meds, or does your Mom not know you are still on the computer, and should be in bed because you have to go to school tomorrow?

      • LifeIs

        Again, there is no comparison between a mouse brain and a human brain. There is one protein difference, between the brain cells of chickens and the brain cells of chimpanzees. There are seventeen proteins different, between chimpanzee brain cells and human brain cells. And chimpanzees are are closest relatives.

        And schizophrenia is not an EEG reading. And schizophrenia is not the same as “cognitive impairment,” either. Intelligent, articulate people can be schizophrenic.

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