Tag Archives: methamphetamine

Addiction, Gateway Drug, Testimonies

Cannabis Goes with Heroin Like Peaches and Cream

Author Explains why Heroin Users Need Their Pot

By Richard Adamski

Three Trees by Richard Adamski is available on Amazon.com

 I started smoking cannabis when I was aged 19 and smoked it for about thirty years.  For a period of about two years I took methamphetamine, originally ‘bombing’ it (putting the powdered drug tightly in a small piece of tissue or a rolling paper and swallowing it).  I progressed to injecting methamphetamine and became addicted to it for about 8 months.  At the time I was self-employed and could afford both drugs, namely meth and cannabis. It was when I got off methamphetamine that I started writing about drugs, particularly cannabis. I was still smoking cannabis then. To be honest the only reason I eventually stopped smoking cannabis and cigarettes is because I was diagnosed with COPD (chronic obstructive pulmonary disease). Years of smoking both drugs caused my COPD.

Over the years I got to know and mixed with a lot of drug users and I asked them all the same question: ‘What was the first drug you took?’ and every reply was cannabis and they continued to smoke it while they took harder drugs. Without question, cannabis is the introductory drug to other drugs. Most drug users start with cannabis. No one has died from smoking cannabis but indirectly they have. I personally know four people who have died because of a heroin overdose and the first drug they took, and continued to take up to their deaths, was cannabis.

Why Cannabis Fits so Well with Class A Drugs

Cannabis goes well with Class A drugs, i.e. heroin and methamphetamine. For example: If you have a toot (burn off the foil) of heroin, then inhale cannabis, keep the smoke in your body for several seconds then exhale, the cannabis increases the heroin effect. Cannabis goes well while you’re buzzing on methamphetamine. Like heroin, when you come down off the drug, a cannabis joint lessens the withdrawal effect.

The side effects of excessive use of cannabis range from anxiety and paranoia to problems with attention, memory and coordination and while you continue to smoke cannabis you are keeping the illegal drug industry going. Cannabis and Class A drugs undeniably go together like peaches and cream. The only people who need cannabis are those who smoke it.

Some people may say that I’m a hypocrite in writing what I have done as I took drugs over a long period of time.  All I can say in my defense is that with taking drugs and mixing with and meeting drug users, I have seen how cannabis runs the drug show.

What about marijuana used as medicine?

There’s massive support for cannabis to be decriminalized or legalized and a lot of famous people support this action. In the UK the BMA (British Medical Association) voted overwhelmingly for cannabis to be made available for such as cancer and MS sufferers. A while ago there was a big national debate about cannabis and in one of the national newspapers there was a half-page photograph of an elderly MS sufferer with a cannabis joint in his mouth. To me that is setting a bad and dangerous example. ‘If he can smoke it, then why can’t I?’ and ‘It’s not doing him any harm so why should it me?’

If such as the MS sufferer could be medically supplied with cannabis in such as a tincture way (dissolved in alcohol), cake, organic yoghurt, as a pill and only available on prescription then that would shut him up and others like him of a similar persuasion. In my opinion cannabis should never be made legal in herbal, grass, weed, because it is in this form where the cannabis problems lie.

Broken Dreams and Death: Marijuana at 14, then heroin

I knew a young man named Ross who dealt cannabis and injected heroin. He didn’t deal heroin. He wasn’t an addict and took heroin and cannabis as recreational drugs. He died at the age off 22 because he had a bad hit of heroin. Whether it was cut with a bad substance I don’t know, but he was found dead in his flat with the needle still in his arm. Ross once told me: ‘I actually wanted to be a pilot in the RAF (Royal Air Force), but at the age of 14 I started smoking Ganga and that put an end to that.’

In my strong opinion, cannabis is the most dangerous drug because most people think it isn’t.

Richard Adamski is the author of Three Trees. Three Trees is a contemporary Wind in the Willows where woodland creatures act as humans do in the environment they live in.  An anti-drug theme runs throughout the story.  He lives in England.

Mental Health

Dr. McKeganey Warned of the Marijuana – Mental Illness Link

PSA Warning Issued in 2005 was Ignored

Eleven years ago the ONDCP and SAMHSA held a press conference to inform of research that confirms what many families already knew–that marijuana use was a trigger for psychosis and mental illness.

The ONDCP is the White House Office of National Drug Control Policy; SAMHSA is the Substance Abuse and Mental Health Services Administration.  Each agency has a crucial role in trying to ascertain usage and reduce demand for drugs.

Specifically, Dr. Neil McKehaney from the University of Glasgow came to the US and spoke at the national Press Club on May 5, 2005. The agencies went to great effort to share important information.  A video was recently found online.

Coverup of the Marijuana – Mental Illness  Risk

At this same Press Conference, a couple who had lost their 15-year-old son to suicide due to the mental health problems arising from marijuana use, spoke.  The Press covered the story, but did not use their considerable investigative skills to probe into what those parents and Dr. McKenagey were describing.  It is true that about one quarter of American high school students are depressed, which points to multiple problems of American culture, not just drugs. However, knowing how vulnerable teens are, and then not exposing the factors that could make their outcomes worse, is lamentable.

In addition to depression, anxiety and suicide, there are the risks of psychosis, bipolar disorder and schizophrenia that arise from marijuana use.  Pot proponents love to state that anyone who has a psychotic reaction to pot already had the problem before they used it.  They tend to blame family members for not  wanting to admit  mental health problems, and argue that pot is used as a scapegoat.

Several studies have shown a link between marijuana and schizophrenia.  Explains pharmacologist Christine Miller, Ph.D:  “No one is destined to develop schizophrenia. With identical twins, one can develop the disease and the other one will do so only 50% of the time, illustrating the importance of environmental factors in the expression of the disease.  Marijuana is one of those environmental factors and it is one we can do something about.”

A Missed Opportunity

One person who worked in the office of ONDCP Director John Walters told Parents Opposed to Pot, “They accused us of being pot-crazy during a time when there was a methamphetamine crisis going on.  Marijuana is almost always the first drug introduced to young people and the evidence for the mental health risks were very strong by 2005.  Although pot was getting stronger as it is today, the warning was falling on deaf ears.  Members of Congress wanted us to focus on the meth crisis, but marijuana was a growing issue and we had a myriad of issues.”

This Public Service Announcement reached audiences in the Press, and some newspapers and magazines reported about it.  Since the Internet and search engines were not as they are  today,  few parents, children,  schools and mental health professionals took notice.   (Did the marijuana lobbying groups bully and try squelch the information?)

Lori Robinson, whose son suffered the mental health consequences of marijuana said:  “I will always deeply regret Shane not hearing this PSA .  Shane was a smart, gregarious and fun-loving young man who naively began using pot never knowing he was playing Russian roulette with his brain in ’05-’06 at the age of 19.   Dr McKeganey so clearly stated that the public views marijuana as harmless, not realizing the potency of THC was rising while the “antipsychotic” property of CBD was being bred out.  Sadly, despite both parents never used an illegal drug in our lives, our son assumed that since a few of his friend had smoked in high school, it was just a “harmless herb.”   Shane’s story is on the Moms Strong website.

Robinson added, “This video is absolutely current TODAY.  Let’s keep this video circulating & it WILL save young brains & families the destruction that lies ahead when marijuana hijacks your kid’s brain.

The research has expanded since that time and scientific evidence on each of the following outcomes from marijuana use is voluminous: marijuana & psychosis, marijuana & violence and marijuana & psychiatric disorders.

Lessons to be Learned

Lives could have been saved, and so many cases of depression, psychotic breakdowns and crimes could have been prevented – if the public had become more aware back in 2005.   Congress, the Press and most of all, the American psychiatric community was wrong to ignore the warnings that were issued with this PSA.

Let’s not continue to ignore  the evidence. Today in the US, mental health is worse than it’s ever been, and the promotion of drug usage may be a huge factor in this problem.  Harm reduction in preference to primary prevention strategies is practiced in many jurisdictions.  Drug overdose deaths have overtaken gun violence deaths and traffic fatalities in the USA — by far — under this strategy.

Today Dr. McKeganey is the Director of the Center for Substance Use Research in Glasgow.

Featured, Mental Health

10 Myths Marijuana Advocates want you to Believe

by Dr. Christine Miller, Ph.D.
Myth #1. It is rare for marijuana users to experience psychotic symptoms like paranoia.
In fact, about 15% of all users and a much higher percentage of heavy users will experience psychotic symptoms.1 Half of those individuals will become chronically schizophrenic if they don’t stop using.2 Fortunately, some do stop using because psychosis is not pleasant and they wisely recognize that pot caused their problems.
Myth #2. Marijuana-induced psychosis must be due to other contaminating drugs.
Clinical studies under controlled laboratory conditions have shown that administering the pure, active ingredient of pot, ∆9-THC, elicits psychotic symptoms in normal volunteers.3  In addition, epidemiological research of nearly 19,000 drug abusing Finnish subjects showed that it was not LSD, amphetamine, cocaine, methamphetamine, PCP or opiates that most consistently led to a diagnosis of long term schizophrenia, it was marijuana.4 Thus, if you lace your LSD with marijuana, you are more likely to go psychotic.
Myth #3. If marijuana is associated with the development of chronic psychosis (schizophrenia), it is only because the patients are self-medicating. Correlation does not equal causation.
Actually, four studies have been carried out in Europe to ask the question which comes first, the marijuana use or the schizophrenia. The research was designed to follow thousands of young teen subjects through a course of several years of their lives, and to ask if those who were showing symptoms of psychosis at study onset were more likely to begin smoking pot, or were those who were normal but began smoking pot during the course of the study more likely to become psychotic. Three of the studies5 convincingly showed that the evidence for marijuana triggering schizophrenia was strong, whereas the evidence for self-medication was weak. The fourth concluded that both were happening — marijuana was triggering psychosis and psychotic individuals were self-medicating.6
Myth #4. Those who become schizophrenic from marijuana use were destined to become so anyway because of their genes.
The truth of the matter is that no one is destined to become schizophrenic. Even in the case where one member of an identical pair of twins has schizophrenia, only about half the time does the other twin become schizophrenic as well.7  Thus, there is ample room for environmental factors like marijuana to make a difference between leading a normal life and not.
Myth #5. Studies showing links between marijuana and psychotic disorders like schizophrenia are “cherry picked” to exclude negative studies.
A very large review of all relevant published papers was conducted by a group of researchers from around the world and published in the prestigious medical journal, The Lancet. No attempt was made to exclude results that were negative. The results they obtained by merging all the studies was that marijuana use approximately doubles the risk for schizophrenia.8 Later research has shown that the risk goes up to 6-fold if the use is heavy or if the pot is strong 9 (similar to the strength of marijuana that is coming out of Colorado now).
Myth #6. Marijuana makes you mellow and less aggressive.
This is certainly not the case for the 15% who experience psychotic symptoms and the subgroup who then go on to develop a chronic psychosis. These individuals are up to 9-times more likely to commit serious acts of violence than people whose schizophrenia has nothing to do with drug use.10 Just a few of the very recent high profile cases here on the East Coast include January’s Columbia Mall shooter Darion Aguilar and “multiverse”-ranting Vladimir Baptiste, who drove a truck through a Towson, MD TV station in May. Somewhat less violent cases include White House episodes: Oscar Ortega, charged with shooting at the White House, ex-Navy Seal employee David Gil Wilkerson charged with threatening the life of the President and most recently, fence jumper Dominic Adesanya who is charged with attacking the White House guard dogs this October. In the Rocky Mountain region, soccer dad Richard Kirk became psychotic after his first use of marijuana edibles for his back pain, and while hallucinating that the world was going to end, shot his wife to death as his children listened through a closed door.On the West Coast, the mentally ill marijuana user Aaron Ybarra shot one student dead and wounded two others on the campus of Seattle Pacific University. In Ottawa this past week, rifleman Michael Zehaf-Bibeau was originally thought to have terrorist ties after he killed a young guard at the Capitol, but instead his friends paint a picture of psychosis and law enforcement records reveal more than one arrest for marijuana possession. All of these individuals exhibited psychotic symptoms prior to their acts and their mental illness could be traced to their marijuana habit in my opinion.
Myth #7. Marijuana is good for the symptoms of PTSD and by keeping this drug from our veterans, we are depriving them of an important alternative treatment.
Veterans Affairs Administration studies have shown that those with PTSD who smoke marijuana make significantly less progress in overcoming their condition.11  PTSD victims are already more vulnerable to psychosis and it comes as no surprise that clinicians have witnessed psychotic breaks in PTSD patients who begin marijuana12 because of the abundant literature showing an association between marijuana use and the subsequent development of psychosis. While the symptoms that afflict PTSD patients (anxiety, depression, panic) may be temporarily relieved while the subjects are “high”, these very same symptoms are exacerbated in the long run.13  Even in the context of polydrug use, it is the degree of marijuana use that correlates most significantly with anxiety and depression.14
Myth #8. Marijuana is less dangerous than alcohol and will reduce alcohol consumption, so we’ll end up with safer roadways.
In terms of mental health, marijuana is more dangerous on all counts (depression, anxiety, panic, psychosis, mania). As far as our roadways go, marijuana all by itself impairs driving. Whether it is better or the same as alcohol in that regard is still a matter of debate. What is known is that users all too frequently do both, and this combination is particularly hazardous. The interaction between the two drugs is synergistic,15 not additive.  So you end up with someone who is wildly impaired.
Myth #9. Laws don’t make a difference to rates of marijuana use
Some of the best data available on youth use in regards to laws comes from Europe, where they have a wide range of marijuana laws between the countries. The European organization ESPAD has studied youth use (15 to 16 year olds) across different countries every four years. The two most recent ESPAD reports (2007 and 2011) show that countries with legalization or defacto legalization (The Netherlands, Czech Republic, Italy, Spain) have on average a 3-fold higher rate of youth use than countries in which it has remained illegal. In our country, differences in decriminalization laws have existed between states for several years. If you break out the states with lenient decriminalization laws that also submit data to the CDC to track youth use (CO, AK, MA, ME), their rate of youth use (9-12th grade) is significantly higher (~25% higher) than states that have strict decriminalization codes and report to the CDC. Lenient codes include a low civil fine with no increase in penalties for repeat offenders, no requirement for drug education, no requirement for drug treatment, and no community service. Outright legalization and dedicated recreational pot shops in this country has not been around long enough for the effect on youth use to be determined.
Myth #10. The Drug War on marijuana is too expensive.
It is hard to put a price on the damage done to someone’s life if they develop a chronic psychosis like schizophrenia or psychotic bipolar disorder. But if economics must be considered, the cost of just schizophrenia alone to our country is approximately $64 billion per year, accounting for treatment, housing and lost productivity.16 If all adults were exchange their glass of wine or two over the weekend for a joint or two, our rate of schizophrenia would be expected to double. That $64 billion per year would pay for the drug war on marijuana and much more.
Brief Bio for the author:   Dr. Christine L. Miller obtained her B.S. degree in Biology from the Massachusetts Institute of Technology and her Ph.D. degree in Pharmacology from the University of Colorado Health Sciences Center. For over twenty years she has researched the molecular neuroscience of schizophrenia, ten of those years at Johns Hopkins University.  She is semi-retired, conducting occasional biomedical consulting on medical cases and an active volunteer for SAM-Maryland (Smart Approaches to Marijuana).
Citations:

  1. Thomas H. A community survey of adverse effects of cannabis use. Drug Alcohol Depend. 1996 Nov;42(3):201-7. Smith MJ, Thirthalli J, Abdallah AB, Murray RM, Cottler LB. Prevalence of psychotic symptoms in substance users: a comparison across substances. Compr Psychiatry. 2009 May-Jun;50(3):245-50. Barkus EJ, Stirling J, Hopkins RS, Lewis S. Psychopathology. Cannabis-induced psychosis-like experiences are associated with high schizotypy 2006;39(4):175-8…………….. ↩
  2. Arendt M, Mortensen PB, Rosenberg R, Pedersen CB, Waltoft BL. Familial predisposition for psychiatric disorder: comparison of subjects treated for cannabis-induced psychosis and schizophrenia. Arch Gen Psychiatry. 2008;65(11):1269-74. Niemi-Pynttäri JA, Sund R, Putkonen H, Vorma H, Wahlbeck K, Pirkola SP. Substance-induced psychoses converting into schizophrenia: a register-based study of 18,478 Finnish inpatient cases. J Clin Psychiatry. 2013 74(1):e94-9…………….. ↩
  3. D’Souza DC, Perry E, MacDougall L, Ammerman Y, Cooper T, Wu YT, Braley G, Gueorguieva R, Krystal JH. The psychotomimetic effects of intravenous delta-9-tetrahydrocannabinol in healthy individuals: implications for psychosis. Neuropsychopharmacology. 2004 Aug;29(8):1558-72. Morrison PD, Nottage J, Stone JM, Bhattacharyya S, Tunstall N, Brenneisen R, Holt D, Wilson D, Sumich A, McGuire P, Murray RM, Kapur S, Ffytche DH. Disruption of frontal θ coherence by Δ9-tetrahydrocannabinol is associated with positive psychotic symptoms. Neuropsychopharmacology. 2011;;36(4):827-36. Bhattacharyya S, Crippa JA, Allen P, Martin-Santos R, Borgwardt S, Fusar-Poli P, Rubia K, Kambeitz J, O’Carroll C, Seal ML, Giampietro V, Brammer M, Zuardi AW, Atakan Z, McGuire PK. Induction of psychosis by Δ9-tetrahydrocannabinol reflects modulation of prefrontal and striatal function during attentional salience processing. Arch Gen Psychiatry. 2012 Jan;69(1):27-36……………. ↩
  4. Niemi-Pynttäri JA, Sund R, Putkonen H, Vorma H, Wahlbeck K, Pirkola SP. Substance-induced psychoses converting into schizophrenia: a register-based study of 18,478 Finnish inpatient cases. J Clin Psychiatry. 2013 74(1):e94-9……………… ↩
  5. Arseneault L, Cannon M, Poulton R, Murray R, Caspi A, Moffitt TE, 2002, Cannabis use in adolescence and risk for adult psychosis: longitudinal prospective study.BMJ. 2002 Nov 23;325(7374):1212-3. Henquet C, Krabbendam L, Spauwen J, et al. Prospective cohort study of cannabis use, predisposition for psychosis, and psychotic symptoms in young people. BMJ. 2005;330:11–15. Kuepper R, van Os J, Lieb R, Wittchen HU, Höfler M, Henquet C. Continued cannabis use and risk of incidence and persistence of psychotic symptoms: 10 year follow-up cohort study.BMJ. 2011 Mar 1;342: d738……………. ↩
  6. Griffith-Lendering MF, Wigman JT, Prince van Leeuwen A, Huijbregts SC, Huizink AC, Ormel J, Verhulst FC, van Os J, Swaab H, Vollebergh WA. Cannabis use and vulnerability for psychosis in early adolescence–a TRAILS study. Addiction. 2013 Apr;108(4):733-40…………….. ↩
  7. Gottesman, I.I., Shields, J.,1967. A polygenic theory of schizophrenia. Proc. Natl. Acad. Sci. U.S.A. 58,199-205…………… ↩
  8. Moore TH, Zammit S, Lingford-Hughes A, et al. Cannabis use and risk of psychotic or affective mental health outcomes: a systematic review. Lancet. 2007;370:319–328…..… ↩
  9. Zammit S, Allebeck P, Andreasson S, Lundberg I, Lewis G, 2002, Self reported cannabis use as a risk factor for schizophrenia in Swedish conscripts of 1969: historical cohort study. BMJ. 2002 Nov 23;325(7374):1199. DiForti M, Morgan C, Dazzan P, Pariante C, Mondelli V, Marques TR, Handley R, Luzi S, Russo M, Paparelli A, Butt A, Stilo SA, Wiffen B, Powell J, Murray RM. High-potency cannabis and the risk of psychosis. Br J Psychiatry. 2009,195(6):488-91..……… ↩
  10. Fazel S, Långström N, Hjern A, Grann M, Lichtenstein P. Schizophrenia, substance abuse, and violent crime. JAMA. 2009 May 20;301(19):2016-23. Harris AW, Large MM, Redoblado-Hodge A, Nielssen O, Anderson J, Brennan J. Clinical and cognitive associations with aggression in the first episode of psychosis. Aust N Z J Psychiatry. 2010 Jan;44(1):85-93..…… ↩
  11. Bonn-Miller, Marcel O.; Boden, Matthew Tyler; Vujanovic, Anka A.; Drescher, Kent D. : Prospective investigation of the impact of cannabis use disorders on posttraumatic stress disorder symptoms among veterans in residential treatment. Psychological Trauma: Theory, Research, Practice, and Policy, Vol 5(2), Mar 2013, 193-200………. ↩
  12. Pierre JM. Psychosis associated with medical marijuana: risk vs. benefits of medicinal cannabis use. Am J Psychiatry. 2010 May;167(5):598-9. ……… ↩
  13. Kuepper R, van Os J, Lieb R, Wittchen HU, Höfler M, Henquet C. Continued cannabis use and risk of incidence and persistence of psychotic symptoms: 10 year follow-up cohort study.BMJ. 2011 Mar 1;342: d738. Moore TH, Zammit S, Lingford-Hughes A, et al. Cannabis use and risk of psychotic or affective mental health outcomes: a systematic review. Lancet. 2007;370:319–328. Zuardi AW, Shirakawa I, Finkelfarb E, Karniol IG. Action of cannabidiol on the anxiety and other effects produced by delta 9-THC in normal subjects. Psychopharmacology (Berl). 1982;76(3):245-50. Patton GC, Coffey C, Carlin JB, Degenhardt L, Lynskey M, Hall W. Cannabis use and mental health in young people: cohort study. BMJ. 2002;325(7374):1195-8. Hayatbakhsh MR, Najman JM, Jamrozik K, Mamun AA, Alati R, Bor W. Cannabis and anxiety and depression in young adults: a large prospective study.J Am Acad Child Adolesc Psychiatry. 2007;46(3):408-17. Hasin DS, Keyes KM, Alderson D, Wang S, Aharonovich E, Grant BF. Cannabis withdrawal in the United States: results from NESARC. J Clin Psychiatry. 2008;69(9):1354-63. Buckner JD, Leen-Feldner EW, Zvolensky MJ, Schmidt NB. The interactive effect of anxiety sensitivity and frequency of marijuana use in terms of anxious responding to bodily sensations among youth. Psychiatry Res. 2009;166(2-3):238-46. Zvolensky MJ, Cougle JR, Johnson KA, Bonn-Miller MO, Bernstein A. Marijuana use and panic psychopathology among a representative sample of adults. Exp Clin Psychopharmacol. 2010 Apr;18(2):129-34……………. ↩
  14. Medina KL, Shear PK. Anxiety, depression, and behavioral symptoms of executive dysfunction in ecstasy users: contributions of polydrug use. Drug Alcohol Depend. 2007 Mar 16;87(2-3):303-11……… ↩
  15. Ramaekers JG, Robbe HW, O’Hanlon JF. Marijuana, alcohol and actual driving performance. Hum Psychopharmacol. 2000 Oct;15(7):551-558.
    O’Kane CJ, Tutt DC, Bauer LA. Cannabis and driving: a new perspective. Emerg Med (Fremantle). 2002 Sep;14(3):296-303. Biecheler MB, Peytavin JF; Sam Group, Facy F, Martineau H. SAM survey on “drugs and fatal accidents”: search of substances consumed and comparison between drivers involved under the influence of alcohol or cannabis. Traffic Inj Prev. 2008 Mar;9(1):11-21……… ↩
  16. Wu EQ, Birnbaum HG, Shi L, Ball DE, Kessler RC, Moulis M, Aggarwal J. The economic burden of schizophrenia in the United States in 2002. J Clin Psychiatry. 2005 Sep;66(9):1122-9. ↩
Featured, Uncategorized

10 Marijuana Myths Advocates Want You to Believe

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By Dr. Christine Miller, Ph.D.
Myth #1. It is rare for marijuana users to experience psychotic symptoms like paranoia.
In fact, about 15% of all users and a much higher percentage of heavy users will experience psychotic symptoms.1 Half of those individuals will become chronically schizophrenic if they don’t stop using.2 Fortunately, some do stop using because psychosis is not pleasant and they wisely recognize that pot caused their problems.
Myth #2. Marijuana-induced psychosis must be due to other contaminating drugs.
Clinical studies under controlled laboratory conditions have shown that administering the pure, active ingredient of pot, ∆9-THC, elicits psychotic symptoms in normal volunteers.3  In addition, epidemiological research of nearly 19,000 drug abusing Finnish subjects showed that it was not LSD, amphetamine, cocaine, methamphetamine, PCP or opiates that most consistently led to a diagnosis of long term schizophrenia, it was marijuana.4 Thus, if you lace your LSD with marijuana, you are more likely to go psychotic.
Myth #3.  If marijuana is associated with the development of chronic psychosis (schizophrenia), it is only because the patients are self-medicating. Correlation does not equal causation.
Actually, four studies have been carried out in Europe to ask the question which comes first, the marijuana use or the schizophrenia. The research was designed to follow thousands of young teen subjects through a course of several years of their lives, and to ask if those who were showing symptoms of psychosis at study onset were more likely to begin smoking pot, or were those who were normal but began smoking pot during the course of the study more likely to become psychotic. Three of the studies5 convincingly showed that the evidence for marijuana triggering schizophrenia was strong, whereas the evidence for self-medication was weak. The fourth concluded that both were happening — marijuana was triggering psychosis and psychotic individuals were self-medicating.6
Myth #4. Those who become schizophrenic from marijuana use were destined to become so anyway because of their genes.
The truth of the matter is that no one is destined to become schizophrenic. Even in the case where one member of an identical pair of twins has schizophrenia, only about half the time does the other twin become schizophrenic as well.7  Thus, there is ample room for environmental factors like marijuana to make a difference between leading a normal life and not.
Myth #5. Studies showing links between marijuana and psychotic disorders like schizophrenia are “cherry picked” to exclude negative studies.
A very large review of all relevant published papers was conducted by a group of researchers from around the world and published in the prestigious medical journal, The Lancet. No attempt was made to exclude results that were negative. The results they obtained by merging all the studies was that marijuana use approximately doubles the risk for schizophrenia.8 Later research has shown that the risk goes up to 6-fold if the use is heavy or if the pot is strong 9 (similar to the strength of marijuana that is coming out of Colorado now).
Myth #6. Marijuana makes you mellow and less aggressive.
This is certainly not the case for the 15% who experience psychotic symptoms and the subgroup who then go on to develop a chronic psychosis. These individuals are up to 9-times more likely to commit serious acts of violence than people whose schizophrenia has nothing to do with drug use.10 Just a few of the very recent high profile cases here on the East Coast include January’s Columbia Mall shooter Darion Aguilar and “multiverse”-ranting Vladimir Baptiste, who drove a truck through a Towson, MD TV station in May. Somewhat less violent cases include White House episodes: Oscar Ortega, charged with shooting at the White House, ex-Navy Seal employee David Gil Wilkerson charged with threatening the life of the President and most recently, fence jumper Dominic Adesanya who is charged with attacking the White House guard dogs this October. In the Rocky Mountain region, soccer dad Richard Kirk became psychotic after his first use of marijuana edibles for his back pain, and while hallucinating that the world was going to end, shot his wife to death as his children listened through a closed door.On the West Coast, the mentally ill marijuana user Aaron Ybarra shot one student dead and wounded two others on the campus of Seattle Pacific University. In Ottawa this past week, rifleman Michael Zehaf-Bibeau was originally thought to have terrorist ties after he killed a young guard at the Capitol, but instead his friends paint a picture of psychosis and law enforcement records reveal more than one arrest for marijuana possession. All of these individuals exhibited psychotic symptoms prior to their acts and their mental illness could be traced to their marijuana habit in my opinion.
Myth #7. Marijuana is good for the symptoms of PTSD and by keeping this drug from our veterans, we are depriving them of an important alternative treatment.
Veterans Affairs Administration studies have shown that those with PTSD who smoke marijuana make significantly less progress in overcoming their condition.11  PTSD victims are already more vulnerable to psychosis and it comes as no surprise that clinicians have witnessed psychotic breaks in PTSD patients who begin marijuana12 because of the abundant literature showing an association between marijuana use and the subsequent development of psychosis. While the symptoms that afflict PTSD patients (anxiety, depression, panic) may be temporarily relieved while the subjects are “high”, these very same symptoms are exacerbated in the long run.13  Even in the context of polydrug use, it is the degree of marijuana use that correlates most significantly with anxiety and depression.14
Myth #8. Marijuana is less dangerous than alcohol and will reduce alcohol consumption, so we’ll end up with safer roadways.
In terms of mental health, marijuana is more dangerous on all counts (depression, anxiety, panic, psychosis, mania). As far as our roadways go, marijuana all by itself impairs driving. Whether it is better or the same as alcohol in that regard is still a matter of debate. What is known is that users all too frequently do both, and this combination is particularly hazardous. The interaction between the two drugs is synergistic,15 not additive.  So you end up with someone who is wildly impaired.
Myth #9. Laws don’t make a difference to rates of marijuana use
Some of the best data available on youth use in regards to laws comes from Europe, where they have a wide range of marijuana laws between the countries. The European organization ESPAD has studied youth use (15 to 16 year olds) across different countries every four years. The two most recent ESPAD reports (2007 and 2011) show that countries with legalization or defacto legalization (The Netherlands, Czech Republic, Italy, Spain) have on average a 3-fold higher rate of youth use than countries in which it has remained illegal. In our country, differences in decriminalization laws have existed between states for several years. If you break out the states with lenient decriminalization laws that also submit data to the CDC to track youth use (CO, AK, MA, ME), their rate of youth use (9-12th grade) is significantly higher (~25% higher) than states that have strict decriminalization codes and report to the CDC. Lenient codes include a low civil fine with no increase in penalties for repeat offenders, no requirement for drug education, no requirement for drug treatment, and no community service. Outright legalization and dedicated recreational pot shops in this country has not been around long enough for the effect on youth use to be determined.
Myth #10. The Drug War on marijuana is too expensive.
It is hard to put a price on the damage done to someone’s life if they develop a chronic psychosis like schizophrenia or psychotic bipolar disorder. But if economics must be considered, the cost of just schizophrenia alone to our country is approximately $64 billion per year, accounting for treatment, housing and lost productivity.16 If all adults were exchange their glass of wine or two over the weekend for a joint or two, our rate of schizophrenia would be expected to double. That $64 billion per year would pay for the drug war on marijuana and much more.
Brief Bio for the author:   Dr. Christine L. Miller obtained her B.S. degree in Biology from the Massachusetts Institute of Technology and her Ph.D. degree in Pharmacology from the University of Colorado Health Sciences Center. For over twenty years she has researched the molecular neuroscience of schizophrenia, ten of those years at Johns Hopkins University.  She is semi-retired, conducting occasional biomedical consulting on medical cases and an active volunteer for SAM-Maryland (Smart Approaches to Marijuana).NotPot
Citations:

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