Live data from Hacker News

Large study finds link between cannabis use in teens and psychosis later

text.npr.org

101–110 of 123 posts

Re: Large study finds link between cannabis use in teens and psychosis later

#101
post #77

Earlier quoted context omitted.

I am firmly against marijuana legalization. This is partially because of this insanity of the pro-legalization arguments. When I would see friends/family that started smoking regularly become noticeably less intelligent while pro-legalization proponents would argue there are no negative side-effects, or people who were obviously compelled to smoke every day or as often as they could.... like some sort of addiction, w…

But why is alcohol legal then? It has worse side effects and more collateral damage.

I think prohibition was the correct move as well, the US was unwilling to truly punish people and make it illegal. You can't slap people on the wrists.

Re: Large study finds link between cannabis use in teens and psychosis later

#102

Earlier quoted context omitted.

I am firmly against marijuana legalization. This is partially because of this insanity of the pro-legalization arguments. When I would see friends/family that started smoking regularly become noticeably less intelligent while pro-legalization proponents would argue there are no negative side-effects, or people who were obviously compelled to smoke every day or as often as they could.... like some sort of addiction, w…

Are you also firmly for alcohol abolition? What about gambling?

Yes to both.

Re: Large study finds link between cannabis use in teens and psychosis later

#103

Earlier quoted context omitted.

>I am firmly against marijuana legalization. Is there an argument or data that could be presented that _would_ change your mind?

I would be for legalization of marijuana if there was evidence there was no negative effect on children or families from people taking marijuana.

You should ban cars too, because they sometimes collide with children and families and injure/kill them.

Re: Large study finds link between cannabis use in teens and psychosis later

#104
post #16
post #3

"But by excluding teens who were already showing mental health symptoms, the new study points to a potential causal link between cannabis use and later mental health diagnoses. Additional research is needed to understand the link fully." Hm, but this does not exclude the possibility that the being prone to mental illness comes with a little bit higher tendency to consume cannabis...

Similarly, cigarettes also have a very strong correlation with schizophrenia. Completely non-causal, but it's hard to find a non-hospitalized schizophrenic who does not smoke.

It makes you want to ask what percentage of 21st century disorders can be blamed on people smoking less.

Re: Large study finds link between cannabis use in teens and psychosis later

#105

Earlier quoted context omitted.

>I am firmly against marijuana legalization. Is there an argument or data that could be presented that _would_ change your mind?

I would be for legalization of marijuana if there was evidence there was no negative effect on children or families from people taking marijuana.

So in your mind, there is no acceptable risk.

Do you hold this position for everything or only some things?

If it's some things, how do you determine which things can have some level of risk that's acceptable and which things can have no acceptable risk? And if there is an acceptable risk for some things, how do you set that level?

Re: Large study finds link between cannabis use in teens and psychosis later

#106

Marijuana legalization arguments were my first introduction to motivated reasoning. I was pretty inclined to agree that locking up non-violent drug offenders was a net-harm to society. But, the pro-legalization folks would argue patently crazy things: it cures cancer, the smoke isn't bad for you at all, there are no downsides! etc. It seemed obvious to me that you could make a more realistic argument and just stick t…

[deleted]

Re: Large study finds link between cannabis use in teens and psychosis later

#107

Earlier quoted context omitted.

I am firmly against marijuana legalization. This is partially because of this insanity of the pro-legalization arguments. When I would see friends/family that started smoking regularly become noticeably less intelligent while pro-legalization proponents would argue there are no negative side-effects, or people who were obviously compelled to smoke every day or as often as they could.... like some sort of addiction, w…

> I am firmly against marijuana legalization. This is partially because of this insanity of the pro-legalization arguments. this is also just motivated reasoning The insanity of the fringe pro-legalization arguments has no bearing on whether legalization is a good idea or not. > When I would see friends/family that started smoking regularly become noticeably less intelligent while pro-legalization proponents would ar…

I have two friends who started at a young age and they fucked their lives with this shit. It's not anecdotal at this point.

Re: Large study finds link between cannabis use in teens and psychosis later

#108

Earlier quoted context omitted.

> I am firmly against marijuana legalization. This is partially because of this insanity of the pro-legalization arguments. this is also just motivated reasoning The insanity of the fringe pro-legalization arguments has no bearing on whether legalization is a good idea or not. > When I would see friends/family that started smoking regularly become noticeably less intelligent while pro-legalization proponents would ar…

I have two friends who started at a young age and they fucked their lives with this shit. It's not anecdotal at this point.

It's anecdotal - you have no way to know what would happen otherwise. I have seen plenty of young people smoke weed in their teens while gradually stoppping later and leading completely 'normal' lives, while a few didn't stop and went to heavy polydrug abuse etc. What exactly does that say about weed? Not much I'm afraid.

Similarly, I know of several persons that went schizophrenic after car accidents, but were the car accidents the cause?

Re: Large study finds link between cannabis use in teens and psychosis later

#109
post #70

Earlier quoted context omitted.

I am firmly against marijuana legalization. This is partially because of this insanity of the pro-legalization arguments. When I would see friends/family that started smoking regularly become noticeably less intelligent while pro-legalization proponents would argue there are no negative side-effects, or people who were obviously compelled to smoke every day or as often as they could.... like some sort of addiction, w…

Did the people you notice becoming less intelligent ever recover? I'm genuinely interested. My biggest regret in life is early years drug use, smoked my first joint at 13. Mdma 18. Cocaine late tewnties. I personally think marijuana might be worse than mdma but not by much. And cocaine is really bad for cardio vascular system, probably physically worst of all of them that I tried. I think both mdma and marijuana caus…

> I think both mdma and marijuana cause anxiety and they mess with short term memory.

OTOH MDMA never caused anxiety (and I had plenty of anxiety issues at the time) or memory issues for me, but of course drug effects are very individual.

Re: Large study finds link between cannabis use in teens and psychosis later

#110
post #60

Marijuana legalization arguments were my first introduction to motivated reasoning. I was pretty inclined to agree that locking up non-violent drug offenders was a net-harm to society. But, the pro-legalization folks would argue patently crazy things: it cures cancer, the smoke isn't bad for you at all, there are no downsides! etc. It seemed obvious to me that you could make a more realistic argument and just stick t…

Probably worth clarifying that when you say "But, the pro-legalization folks would..." you mean some stoners you met in college. Because there are plenty of proponents who are not that... in fact 64% of Americans support making weed legal (2025), so it'd be really unfair to judge that movement based on those old experiences.

Yeah, it sounds like hs confabulating arguments about pain reduction in cancer patients with "cures cancer" from some nebulous source.

Cherry picking is pretty much the same as motivated reasoning when making arguments.

Post reply on HN