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  1. #1
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    "Does cannabis cause anxiety?"

    "Does cannabis cause mental illness?" by Peter Gates, Senior Research Officer for the National Drug & Alcohol Research Centre at University of New South Wales, licensed under CC BY-ND 4.0

    Cannabis is the most commonly used illicit drug in Australia, with one in three adults using it at some point in their life. It?s legal in some places around the world, and offered medicinally in others. But what does smoking pot do to your mental health?

    The potential harms associated with using cannabis depend on two things above all others.

    The first is the age at which you first begin to use cannabis, particularly if it?s before 18. Using cannabis during key stages of brain development can impact on synaptic pruning (when old neural connections are deleted) and the development of white matter (which transmits signals in the brain).

    The second is the patterns of use: the frequency, dose and duration, particularly if you?re using at least weekly. The bigger or more potent the dose, the more tetrahydrocannabinol (THC) you are ingesting. THC is the main psychoactive component of cannabis and appears to act on areas of our brain involved in the regulation of our emotional experiences.

    Depression and anxiety

    Many studies of the relationship between cannabis use and mental illnesses such as depression and anxiety have suffered from methodological issues by not controlling for related factors.

    The few longitudinal studies that have been conducted have mixed findings.

    A 2014 review of the existing research concluded that using cannabis placed an individual at moderate risk of developing depression.

    Unfortunately it was not within the scope of the research to determine if cannabis use was causing depression or if the relationship instead reflects the association between cannabis use and social problems. Cannabis use is associated with other factors that increase risk of depression such as school dropout and unemployment.

    The relationship between cannabis use and anxiety is also complex. Many people use cannabis for its euphoric and relaxing effects. But some people also experience feelings of anxiety or paranoia when intoxicated. As such, cannabis could be used to relieve anxiety or stress for some while causing others to feel anxious.

    A 2014 review of the available research concluded that using cannabis placed an individual at a small risk of developing anxiety. But the authors noted that while the weight of evidence supported the coexistence of cannabis use and anxiety, there was relatively little evidence to suggest that cannabis caused anxiety.

    Not included in these previous reviews of depression and anxiety disorders were two recent investigations of cannabis use in the United States using data from 2001-2002 and 2004-2005. These included a host of variables such as demographic status and family environment.

    Each found a significant association between cannabis use and the onset of depression and anxiety disorders. But this association was no longer significant when considering the impact of the included variables.

    Clearly, the relationship between cannabis use and depression and anxiety disorders is complex and involves the individual?s reasons for cannabis use and external situations. That is, cannabis may be used to help cope with social problems that were not necessarily caused by cannabis use.

    Schizophrenia

    In contrast, the relationship between cannabis use and risk of developing symptoms of psychosis has been well established in many different review articles.

    This research has found that early and frequent cannabis use is a component cause of psychosis, which interacts with other risk factors such as family history of psychosis, history of childhood abuse and expression of the COMT and AKT1 genes. These interactions make it difficult to determine the exact role of cannabis use in causing psychosis that may not have otherwise occurred.

    Regardless, the connection between cannabis use and psychosis is not surprising. There is a strong resemblance between the acute and transient effects of cannabis use and symptoms of psychosis, including impaired memory, cognition and processing of external stimuli. This combines to make it hard for a person to learn and remember new things but can also extend to the experience of deluded thinking and hallucinations.

    We also know that cannabis use by people with established psychotic disorder can exacerbate symptoms.

    Overall, the evidence suggests cannabis use will bring forward diagnosis of psychosis by an average of 2.7 years.

    The risk of developing schizophrenia increases with the duration and dose of cannabis use. Regular cannabis users have double the risk of non-users. Those who have used cannabis at some point in their life have a 40% increased risk compared with non-users.

    That said, it is important to view this increased risk in context. The proportions of individuals with psychosis among the population and among cannabis users are low. Current estimates suggest that if frequent long-term cannabis use was known to cause psychosis, the rates of incidence would increase from seven in 1,000 in non-users to 14 in 1,000 cannabis users.

  2. #2
    Koalafan's Avatar Socially inept Koala
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    You know it's kind of funny, since cannabis is probably the ONLY thing that completely murders my anxiety and uplifts me (even alcohol has very limited effects on actually calming me down, and even can make my anxiety worse during certain cases). Even though I haven't smoked in a while due to the fact that weed is illegal where I live, there definitely is a part of me that would for sure make use of it if I lived in a friendly place. I definitely would rather use weed for anxiety then a combo of ssri's/benzos which have their own ups and downs when it comes to addiction/health issues. But of course, like with anything, there can be some cons.I just wish I wouldn't run the risk of getting arrested for using something that could actually help me (and many others).

  3. #3
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    Quote Koalafan View Post
    You know it's kind of funny, since cannabis is probably the ONLY thing that completely murders my anxiety and uplifts me (even alcohol has very limited effects on actually calming me down, and even can make my anxiety worse during certain cases). Even though I haven't smoked in a while due to the fact that weed is illegal as [BEEP] where I live, there definitely is a part of me that would for sure make use of it if I lived in a friendly place. I definitely would rather use weed for anxiety then a combo of ssri's/benzos which have their own ups and downs when it comes to addiction/health issues. But of course, like with anything, there can be some cons.I just wish I wouldn't run the risk of getting arrested for using something that could actually help me (and many others).
    I completely agree with you. It is so frustrating that most governments are unwilling to legalise cannabis and instead insist using only SSRIs and benzos. For me, I'm not allow to have benzos as I'm already on powerful pain killers and I risk death if those are mixed with benzos

  4. #4
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    Unbelievable as it sounds, I never tried illegal drugs. Who has that kind of money??

    So I really don't know what it does.

    I think the only way I would even think about it, was if it was legalized all over and distributed from my local pharmacy with an FDA approved stamp on it. Oh and my insurance paid for it. As stupid as this sounds, I trust the government more than I trust the guy standing on the corner hawking drugs. I've hung out with some of these guys when I was homeless and just their cleanliness habits will give you malaria.
    The Hokey Pokey IS what it's all about

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