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> as a result developed schizophrenia

I'm sorry about your brother, but I want to point out this is anecdotal. Can cannibals lead to psychosis in people who are prone to it genetically, or are people who start experiencing delusions, bipolar and schizo-effective conditions just likely to escape using alcohol and marijuana? The exact cause/effect conditions here are a big unknown.



Not the OP, but this is not anecdotal. Weed can develop schizophrenia in 4-5% of the population that carries a specific gene. Ref: https://www.drugabuse.gov/publications/research-reports/mari...


> The strongest evidence to date concerns links between marijuana use and substance use disorders and between marijuana use and psychiatric disorders in those with a preexisting genetic or other vulnerability.

> After adjusting for various confounding factors, no association between marijuana use and mood and anxiety disorders was found. The only significant associations were increased risk of alcohol use disorders, nicotine dependence, marijuana use disorder, and other drug use disorders.

It's pretty well established even in hardcore drug communities that drugs aren't for everybody and it's rarely ever the drug itself that caused it. Even without scientific evidence.


Do you really think a publication from a place with a URL 'drugabuse.gov' is going to be a reliable source of unbiased information?



Citing a source doesn't make your message unbiased.

There is a saying "even the devil can quote scripture."


And then even the devil gets pointed out how they used the scripture wrong. The point being that the data itself is addressed, rather than just ad hom'ing the devil.


All of them are either wrong or irrelevant because none of them factor in weed helping.


It's a division of the NIH and the article cites a peer-reviewed paper in Biological Psychiatry, so yes, I do think that this is a reliable source of unbiased information. The original study carefully describes its methodology (which is as sound as any neuroscience paper I've read), and was done in London, so you can't argue that the researchers are biased by American government attitudes toward drugs:

http://www.mypsychiatrist.london/sites/default/files/publica...


Every country, city, and government has a bias and an attitude toward drugs, including London. I hope you're not suggesting (perhaps you improperly worded your comment) that the US government is biased toward drugs but English government is not biased at all and is completely neutral scientifically. If that's what you meant, I think it's specious.


Every person has a bias towards or against anything they choose to take a position on.

I'm saying that the biases of the U.S. government, UK NIH, King's College London, and Palermo University, Italy (the other sponsor of the researchers) are likely to be largely uncorrelated when it comes to drugs. The U.K. does not have the U.S's history of criminalizing specific drugs (marijuana, heroin) simply because they are used by marginalized groups while legalizing others (nicotine, alcohol, caffeine) because they have powerful corporate interests backing them. They undoubtedly have other biases, but in a study of the genetic effects of THC on psychosis those are less likely to be relevant.

One way to minimize the effects of bias, despite its ubiquity, is to seek out multiple independent POVs. Each one of them is individually biased, but when you average them together you get something approximating the truth.


The UK govt has a strong track record of ignoring scientifically literate advice on drug risks


> ...was done in London, so you can't argue that the researchers are biased by American government attitudes toward drugs

Ah, my naive little cultural hegemonist. Sounds like you've live all your life in America. Have a Coke, turn on some Hip Hop, and watch your Mickey Mouse.


If you want to nitpick on the source, this is another source with a full publication:

> Variation at the rs2494732 locus of the AKT1 gene predicted acute psychotic response to cannabis along with dependence on the drug and baseline schizotypal symptoms.

Ref: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4872423/


Thanks for this specific info! If anyone reading this has done 23andMe, your ATK1 / rs2494732 genotype is available on there (search for those terms, it comes right up).


I have magnitude 1.5 on the rs2494732 variation. Love the herb.


It's a peer reviewed study published in The Journal of Neuroscience.

If you take issue with the study, state why - don't ignorantly reject the results because you think the scientist's employer's name sounds biased.


> s going to be a reliable source of unbiased information

Kinda like https://www.ready.gov/ for disasters... yes!


Have you checked the math on the statistical analysis?


Really grasping for straws here


The way to contest evidence is to show that either: the statistical analysis has an error in the math, or that there is an issue with the scientific process used to obtain those results.


They're not self-published.


And how much of the general population carries that specific gene? The 4-5 is a conditional probability.


Wow what a paragon of truth and levelheaded reason, posting some propaganda article that any dumbass can poke holes in and which every dumbass has poked holes in. I love society now, and all of its earnest regard for public discourse and truth instead of just commies, who think they know whats best for everyone, marketing their worldview at any cost.


drugabuse.gov should probably not be considered an un-biased source on the topic of drugs of abuse. Some of their material will be propaganda and FUD.


So that's as far as you got? Didn't like the domain, therefore the study results are bunk?

75% of the authors are affiliated with other institutions, only 3 are with the National Institute on Drug Abuse.

NIDA itself is well-grounded. There have been some instances where they take a more conservative stance given uncertainty in results, but this is still a national scientific institute - not DARE or the DoJ.

Finally, the paper is on PMC: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5426185/ - why do you disagree with their conclusion?


Would you care to speculate again about how much time I've spent reading their literature before this discussion? I promise you, it's non-zero. Please try not to dismiss people's positions that shallowly; it's a disservice to the conversation we're trying to have, and it's rude.

I am involved in a number of communities that engage intentionally, even sacramentally, with psychedelics. The amount of sheer bullshit they continue to promulgate on that matter, about which I consider myself advanced-lay to burgeoning-expert, is staggering, and is sufficient for me to be default skeptical of anything else they might have to say. When you lie to me about things I know something about, I'm obligated to trust the rest of your oeuvre somewhat less, aren't I?

Finally, I said nothing whatsoever about the conclusion of the paper under general discussion. In point of fact, I generally agree with it.


Not OP, but FWIW your italicizing of drugabuse.gov also gave me the impression that you were dismissing it purely by domain. I did not ready any rudeness in your parent.


Thanks for your perspective, I appreciate it. I can see that being a legitimate read of the comment, if one punts on the guideline to assume good faith, and interpret people's arguments in the strongest light, rather than, e.g., dismiss them on the basis of formatting.

It's just disappointing when that happens, because I try to engage that way, and assume my comments will be treated the same.

EDIT: That said, I didn't exactly offer much in the way of argument there, did I?


oh thank the cosmos there is someone else who notices. im absolutely fascinated with psychedelic inspired communities, but that being said i certainly do notice a lot of people that tend to just devolve into a mostly coherent glossolalia in order to fit into some perceived archetype of a "woke shaman" or some such, and as someone with a vested interest in the pursuit of shamanism as an aspect of spiritual pursuits, it certainly frustrates me. i mean, to each their own, but i think it kinda poisons the well a bit. words and stuff ( ͡° ͜ʖ ͡°)


I'm not quite sure what you're referring to with "glossolalia", offhand. The shamans I work with variously use a mix of Spanish, English, and Quechua, or Shipibo-Conibo, and although all of those (if moreso the indigenous tongues) have what seem to be "filler words" with no specific (known) meaning, the overwhelming majority of the sounds they utter are recognizably from those languages, or whistling, or whatever.


your statement is soundly countered in a similarly unsupported opinion above. You may not like their domain name but the paper and science behind it appear pretty sound.


Right, because it's clearly the domain name I take issue with, and not at all the literal lies that have been published under it.


Can we stop with the downplaying when it comes to drugs?

Drugs should be guilty until proven innocent. Comments like these attempt to make them innocent until proven guilty. History has shown that there are very few "safe" recreational drugs.

This attitude is one of the reasons it was so hard for public opinion to change on tobacco usage.

"My mom died of cancer from smoking tobacco"

"Sorry about your mom, but I want to point out this is anecdotal. Can tobacco lead to cancer in people who are prone to it genetically? Or are people that are genetically prone to cancer drawn to tobacco? Or does it affect everyone? Lots of big unknowns here, so let's play it safe and not jump to any conclusions about the harm tobacco potentially may cause."


I'm looking forward to people talking about "Big Weed" in 20 years with the contempt currently reserved for "Big Tobacco."


It won't be weed's fault when that's the case. Weed is a lot different from tobacco in every way.


>This attitude is one of the reasons it was so hard for public opinion to change on tobacco usage.

With tobacco use, there was a huge amount if money spent selling the public on the idea that it wasn't dangerous. In contrast, there has been a large amount of money spent selling the idea that marijuana is incredibly dangerous. More accurate conversations would be

"My mom died of lung cancer"

"I'm sorry to hear that, would you like one if my doctor recommended cigarettes? Marlboro published a study saying smoking helps grieving people with no side effects."

Compared to

"My mother has schizophrenia"

"It's her fault for smoking marijuana. At least they locked up your father for selling it."


Meanwhile we all keep ignoring that the booze industry has worked tirelessly to make sure we use the phrase "drugs and alcohol" so alcohol isn't recognized as a drug by most of the population


Is the booze industry doing that? Or do people do that as a form of rationalization to convince themselves that they aren't regular drug users?


Yes, and even more damning is the language used by DARE:

> D.A.R.E. America's Commitment to Prevention In its 35 year history, D.A.R.E. America has constantly improved its science and evidence based education programs to provide students with the knowledge and tools they need to resist drugs, alcohol, and other high risk behaviors.

Alcohol gets classified as separate from drugs. Wouldn't want kids telling their parents to not do drugs, right? And if their parents drink, that would just signal drugs are OK... etc etc


> Drugs should be guilty until proven innocent.

For a meme war maybe, but for those of us who decide based on facts, their precise safety is unknown until proven otherwise.

> History has shown that there are very few "safe" recreational drugs.

What history is this, and for what specific definition of the word "safe"?

> This attitude is one of the reasons it was so hard for public opinion to change on tobacco usage.

Perhaps, but pardon me if that doesn't motivate me to hop on board the anti-science train.


The person you are replying too understands that it is anecdotal, which is why they mentioned that it's a woefully understudied topic and needs more funding for long term studies.


It’s going to be difficult to draw any meaningful conclusions as you would need to construct identical environments with and without access to marijuana combined with cloned DNA or twin studies. Even then, will that be enough to predict if someone will have an adverse reaction to marijuana based on their DNA?

A simple test to determine if a teenager who tries marijuana should be forced to stay away from it is whether they have an extreme reaction to it.


I can't say what truly caused it or what factor cannabis played, all I know is that the diagnosis was 'substance induced psychosis' and 'schizophrenia' -- the doctors were pretty stumped and that leads to my point that a lot more research is needed.


It has been known for a while that certain drugs (also LSD) can induce psychosis' in certain people. The problem is that you cannot know if you are one of these people until you tried for a while. So it's a bit like playing Russian roulette. If you don't develop a psychosis when doing LSD, marihuana or shrooms, chances are that you will be fine. But if you do, you have a problem, possibly destroying your whole life.


I have a similar situation with my own brother- skipping over many details for brevity. What I've always wondered was whether the marijuana caused the mental illness or whether the mental issues developing lead to a dependence on the marijuana to cope with the stress, anxiety, etc. Sure, there is a correlation there, but how certain are we which causes which?

Then again, psychotropic drugs when you're already dealing with problematic brain chemistry probably isn't a great idea for anyone.


A number of studies ive read seem to point towards marijuana and hallucinogens as merely aggravating symptoms of mental disorders that were already present, but hadn't yet easily or fully expressed themselves. Things like bi-polar, schizophrenia, and other disorders are commonly known to grow in intensity going into adulthood, so even if the first time a breakdown or episode happens is actually triggered by something like marijuana, does that mean they could have never been diagnosed if they never used that drug? Or does it just mean they would have had a breakdown in the near future regardless? Maybe they just set the trigger of slightly earlier.


My experience is that many of the negative side effects of recreational drugs come from the culture in which they are taken, and the habits associated with them.

Taking ecstacy, for example, often involves staying up all night and dancing. I also feel terrible if I deprive myself of sleep without taking drugs, but I tend not to do that so often. So are the drugs dangerous, or are we just failing to construct heathy social norms around them?


Currently we strongly think that cannabis use can cause psychotic illness in some people, and that some of those would not have gone on to develop psychotic illness if they had not used cannabis.

But it's really complex.

People with schizophrenia smoke. They start smoking early, they smoke more frequently, and when they smoke they inhale deeper. EG, this, but there are lots of similar: https://www.ncbi.nlm.nih.gov/m/pubmed/25991762/

It's hard to unpick the causal directions. But the precautionary principle is sound: there's not many benefits to children of smoking cannabis, so they should probably avoid it.


This is not anecdotal. It’s called Cannabis Induced Psychosis (CIP).

https://www.psychiatrictimes.com/substance-use-disorder/cann...


> Can cannibals lead to psychosis in people

There are many diseases known to propagate via cannibalism, including ones with psychological symptoms: https://en.wikipedia.org/wiki/Kuru_(disease)


It’s not anecdotal. The relative risk for developing schizophrenia for cannabis smokers vs non cannabis smokers is 2.3. This means that you are 2.3 times more likely to develop schizophrenia if you smoke cannabis.

Your post annoys me because it might actually lead people astray. Please try not to talk about things you know little to nothing about.

Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4988731/


Marijuana is well known for causing psychosis, paranoia, panic, and other disturbed mental states. There's a reason they tell you not to eat the whole brownie - once the bad trip comes on, you're stuck with it and just have to ride it out. It can be quite harrowing. I also don't think marijuana is at all safe to take regularly, just looking at people who do so. It seems to incur actual neurological changes - you even stop having dreams. I understand that it can be fun, but all things must be taken with moderation, and people's increasing obsession with this psychoactive drug is worrisome.


> I also don't think marijuana is at all safe to take regularly, just looking at people who do so

I suspect lots of people around you do so without you knowing it; as it remains a federal crime and not protected from employment and other discrimination, many people are discreet about it and the non-discreet are not a representative subset of the using population.


It's worth noting that this is even more true of 'hard' drugs than cannabis. There are a surprising number of fine upstanding citizens with a heroin addiction...


*citations needed




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