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Re:Younger cannabis users have reduced brain function, finds... by bearjaws on Wednesday January 29, 2025 @09:12PM (#42873997)
This is such an obvious problem to anyone who is above the age of 25.

All of my friends who were real big into weed in high school are all pretty bad at remembering things, most work dead end jobs and are generally unmotivated The ones who started the youngest are in rough shape mentally. Every single one of my friends who still lives with their parents smokes multiple times daily.

Out of all of them, only one is successful, and It's because he bought BTC in 2014 and still has around 20 of them.

I have no doubt, smoking when you are <21 is a huge problem long term.

Re:Younger cannabis users have reduced brain function, finds... by milkshakes on Wednesday January 29, 2025 @10:24PM (#42874478)
I believe that your perspective is harmful. I'm an accomplished staff engineer who has worked at multiple megacorps and valley darling companies including MANGAFANGA or whatever you call it and am highly goal oriented and passionate contributor. I started smoking weed at 13. I own multiple homes and live a well adjusted life with my wife. I support my parents and sisters. Without weed, I can get tunnel vision, or looped, trapped in the many contradictions and highly irrational layer 8 issues that permeate high stakes corporate decision making surrounding my technical efforts. Weed helps this all bother me less. I vape every day. Often on balconies at work. I'm afraid of schizophrenia, but besides that, weed has been a miracle drug for me. I have a psychiatrist, I've had pharmaceuticals, but really the plant has been the best thing for me and I wouldn't have gotten nearly as far as I have without it.
Re:Younger cannabis users have reduced brain function, finds... by caminante on Wednesday January 29, 2025 @10:40PM (#42874564)
Happy for you, seriously.

Getting this subthread back on topic, the study defines heavy (or medium) use - i.e., the problem categories in the study - as 1000+ (or 11-1000 days of usage). Are you a medium-heavy user?

I don't think you being an exception disproves the parent's generality that on the average heavy weed usage doesn't correlate with people in your position.

Re:Younger cannabis users have reduced brain function, finds... by milkshakes on Wednesday January 29, 2025 @11:35PM (#42874900)
I believe his generality has more to do with his friends than the drug itself. I am a heavy user. Remembering names sometimes is hard upon first introductions, but besides that my short-term memory seems to function just fine. I have had many coworkers in similar situations at the organizations I've been a part of. We've stayed friends, they're doing just fine. Some are in happier work situations and no longer consuming to cope. I've been actively trying to find my own balance as well. But generalizing stoner -> loser is a harmful, limited, and ignorant perspective in my opinion.
Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @11:30PM (#42874872)
Based on the content of their post (started at 13, uses daily) they are WAY over 1100 days
Re:Younger cannabis users have reduced brain function, finds... by Clent on Wednesday January 29, 2025 @11:50PM (#42874982)
It's 1100 times not days.

Anyone who smokes every couple of hours is averaging around 8 times a day and hits that in under five months.

People who do not smoke weed have no idea how heavy, heavy really is.

Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Thursday January 30, 2025 @12:01AM (#42875035)
I'm not sure what your are arguing here. Even if they are 30 they are well over 1100
Re:Younger cannabis users have reduced brain function, finds... by Clent on Thursday January 30, 2025 @10:12PM (#42884405)
I wasn't meaning to argue anything beyond perhaps bringing to light how naïve these studies are. We don't count alcohol consumption this way. Is someone that smokes once per week for 20 years a heavy user? Would anyone consider someone that drinks once per week for 20 years a heavy drinker?

Why do these studies assume weed is cumulative but alcohol isn’t? Is it because most researchers have experience with being drunk but zero to little experience with being high on weed?

It seems likely there is a difference between someone who is buzzed all day every day for years vs someone that smokes several times each weekend, but these studies all group them together as one. Most likely because the researchers don't understand what they are studying and produce results that do not match the lived experience of their research subjects.

Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Friday January 31, 2025 @02:10PM (#42890651)
Oh I see. Yes I would definitely agree with that.

Thanks for the clarification

Re:Younger cannabis users have reduced brain function, finds... by caminante on Thursday January 30, 2025 @06:54PM (#42883459)
Fair point, but not material for the parent's case.

To your point, AFAIK, the study doesn't differentiate potency of weed. Not all cannabis is created equal and the strands commonly available now are way more potent (with more arrows pointing to addictiveness) than "your dad's weed."

Re:Younger cannabis users have reduced brain function, finds... by foobarkey on Wednesday January 29, 2025 @10:32PM (#42874523)
I am pretty much in similar situation, the contradictions can sometimes drive me nuts, maybe I should try weed
Re:Younger cannabis users have reduced brain function, finds... by wonnage on Wednesday January 29, 2025 @10:34PM (#42874530)
this sounds like a parody comment
Re:Younger cannabis users have reduced brain function, finds... by milkshakes on Wednesday January 29, 2025 @11:05PM (#42874728)
> Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something.
Re:Younger cannabis users have reduced brain function, finds... by jimmygrapes on Wednesday January 29, 2025 @10:29PM (#42874505)
Yeah well I started smoking weed when I was 16 and I'm a poor man approaching retirement with no family or friends or assets and a tenuous job predicated in my ability to perform manual labor. Now what.
Re:Younger cannabis users have reduced brain function, finds... by joshmanders on Wednesday January 29, 2025 @10:37PM (#42874541)
You're statistically more likely to become a burnout drunk than a burnout stoner.

Literally every highly successful person you look up to in tech has been a proponent of weed usage, hell some even went farther with psychedelics.

Like op, I too attribute a lot of my success to being a daily user of weed since I was 12.

Re:Younger cannabis users have reduced brain function, finds... by somenameforme on Thursday January 30, 2025 @01:09AM (#42875346)
Exceptional success is often associated with exceptional behavior. Not as in good, but as in the exception. For instance many/most highly successful tech people also dropped out of university and don't have many great things to say about it. They may well be right, but that's not a path to success for the average person unless they instead plan on pursuing a skilled trade or what not.

I also imagine extreme success drives social issues. It has to suck not ever truly being able to know if somebody is interested in you because they're interested in you, or if they're simply interested in your money/fame. To say nothing of the fact that a lot of these guys can't even really safely walk around strangers anymore. It all seems like a path to various artificial forms of coping, like drugs. Basically the same reason Hollywood types are also screwed.

Re:Younger cannabis users have reduced brain function, finds... by aurareturn on Thursday January 30, 2025 @12:25PM (#42879921)
What was the average THC content when you were a teenager?
Re:Younger cannabis users have reduced brain function, finds... by AngryData on Wednesday January 29, 2025 @11:34PM (#42874892)
So you are just like 50% of everyone else. It isn't unusual or uncommon nor proof that you did anything wrong at all, statistically a lot of people are going to be in that situation regardless of their own personal merits just based on the luck of the draw in life events and choices. That is why so many people are unhappy with current economic standards because obviously a lot of people that deserve better get shafted regardless, and others who are below average make out like bandits.
Re:Younger cannabis users have reduced brain function, finds... by milkshakes on Wednesday January 29, 2025 @10:31PM (#42874517)
Weed is a drug. Drugs are tools. Weed makes things bother you less. It's obviously possible to take it too far.
Re:Younger cannabis users have reduced brain function, finds... by chris_wot on Wednesday January 29, 2025 @10:36PM (#42874538)
Weed is a drug. Drugs affect people differently. The question is: do you want to roll the dice?
Re:Younger cannabis users have reduced brain function, finds... by milkshakes on Wednesday January 29, 2025 @11:02PM (#42874707)
This is true for all drugs, legal or not.
Re:Younger cannabis users have reduced brain function, finds... by chris_wot on Thursday January 30, 2025 @12:25AM (#42875164)
True, but with expert medical guidance you can often avoid unnecessary side effects or be aware of them.
Re:Younger cannabis users have reduced brain function, finds... by interludead on Thursday January 30, 2025 @03:43AM (#42876085)
It’s like playing a game where the best-case scenario is probably fine
Re:Younger cannabis users have reduced brain function, finds... by poisonborz on Thursday January 30, 2025 @04:02AM (#42876176)
This sounds like the "my granddad smoked like a chimney and lived happily to 92" argument.
Re:Younger cannabis users have reduced brain function, finds... by ristos on Thursday January 30, 2025 @04:03PM (#42882158)
Maybe that's not a horrible argument in general though, everyone and every body is different. Some things are more therapeutic and medicinal to some people because of their unique physical and mental composition, and other things are more toxic.

I found out I'm a slow metabolizer of caffeine, a cup of coffee will last like 16-18 hours for me, even though the half-life is supposed to be 3-7 hours for adults, which makes coffee a more dangerous drug for me because it'll disrupt my sleep more than the average joe. I still like coffee but I have to be more careful than most people.

That being said I'm pretty sure cannabis is horrible for the developing brain. I remember one anecdote of someone who told me they would get really high when they were 14, and would get so high that they would literally black out, like have no idea what just happened. Probably best to be avoided until adulthood. Nobody when I was in college or older ever experienced anything like that, just the usual report of infrequent users forgetting what they were just talking about or what someone else just said to them, the whole short term memory loss thing.

Re:Younger cannabis users have reduced brain function, finds... by ziddoap on Wednesday January 29, 2025 @09:54PM (#42874288)
I have plenty of anecdotes in the other direction. Perhaps there are other factors involved.

Weed isn't going to give you a leg up in life, but it's not a guarantee that you're going to end up in a dead end job and live with your parents forever either. Painting it as such reminds me of D.A.R.E.

Re:Younger cannabis users have reduced brain function, finds... by ameister14 on Wednesday January 29, 2025 @10:23PM (#42874468)
You have a bunch of anecdotes where the only successful people from the same school and friend group are the ones that regularly smoked and still smoke weed? They have the best memories of the people you know?

>Weed isn't going to give you a leg up in life, but it's not a guarantee that you're going to end up in a dead end job and live with your parents forever either.

Sure, and smoking doesn't guarantee lung cancer. It sure as hell makes it more likely, though.

Re:Younger cannabis users have reduced brain function, finds... by ziddoap on Wednesday January 29, 2025 @10:26PM (#42874493)
>You have a bunch of anecdotes where the only successful people from the same school and friend group are the ones that regularly smoked and still smoke weed?

I have a bunch of anecdotes where people I knew who regularly smoked weed throughout high school now range from successful to wildly successful.

I know a bunch of people that abstained and yet they work dead end jobs, have developed mental issues, and/or live with parents still.

Hence my conclusion that there might just be some other (more important) factors.

Re:Younger cannabis users have reduced brain function, finds... by ameister14 on Wednesday January 29, 2025 @10:30PM (#42874513)
Sure, that makes sense. If the risk of something is 1 in 10, 10 people do it, you have 9 examples of people who have no problems and 1 example of someone with an issue.

I was thinking you were saying that you had examples of people who were successful because they smoked weed, where others similarly situated were unsuccessful having not smoked it.

Re:Younger cannabis users have reduced brain function, finds... by ziddoap on Wednesday January 29, 2025 @10:32PM (#42874519)
>I was thinking you were saying that you had examples of people who were successful because they smoked weed

No, and I'm not disputing that weed is harmful.

What I took issue with in the parent comment is that it insinuates that smoking weed is a guarantee of a shitty life. I disagree with the weight of the harm they imply.

There is a lot of other factors involved, and a lot more nuance and context to consider.

Re:Younger cannabis users have reduced brain function, finds... by watwut on Thursday January 30, 2025 @03:26AM (#42876013)
I have anecdotes of them having good jobs and being successful. I do not have anecdote of them being the ONLY successful. Success wise, they are around the same as everyone else.

> Sure, and smoking doesn't guarantee lung cancer. It sure as hell makes it more likely, though.

And even with smoking it is possible to exaggerate health risks it poses. Just like you severely exaggerated marihuana risks.

Re:Younger cannabis users have reduced brain function, finds... by ameister14 on Thursday January 30, 2025 @09:03AM (#42877722)
How did I severely exaggerate anything? I am not OP
Re:Younger cannabis users have reduced brain function, finds... by iforgot22 on Wednesday January 29, 2025 @10:05PM (#42874357)
D.A.R.E. was right
Re:Younger cannabis users have reduced brain function, finds... by ziddoap on Wednesday January 29, 2025 @10:07PM (#42874374)
>In 1998, a grant from the National Institute of Justice to the University of Maryland resulted in a report to the NIJ, which among other statements, concluded that "D.A.R.E. does not work to reduce substance use." [...] The evidence suggested that, by exposing young impressionable children to drugs, the program was, in fact, encouraging and nurturing drug use.

>A ten-year study was completed by Donald R. Lynam and colleagues in 2006 involving one thousand D.A.R.E. graduates in an attempt to measure the effects of the program. After the ten-year period, no measurable effects were noted.

>In 2001, the Surgeon General of the United States, David Satcher, placed the D.A.R.E. program in the category of "Ineffective Primary Prevention Programs".

>In March 2007, the D.A.R.E. program was placed on a list of treatments that have the potential to cause harm in clients in the APS journal, Perspectives on Psychological Science.

It was, at best, ineffective. At worst it was harmful.

Re:Younger cannabis users have reduced brain function, finds... by iforgot22 on Wednesday January 29, 2025 @10:12PM (#42874404)
Kids didn't listen to it, but it was right. It painted weed and harder drugs as pointless and dangerous, which they are.
Re:Younger cannabis users have reduced brain function, finds... by Gud on Thursday January 30, 2025 @12:18AM (#42875125)
Ok. Personally I think weed saved my life.
Re:Younger cannabis users have reduced brain function, finds... by ziddoap on Wednesday January 29, 2025 @10:16PM (#42874435)
>It painted weed and harder drugs as pointless and dangerous

It painted weed as something that if you took a single toke you'd end up shooting heroin shortly after.

The hyperbole, similar the parent comment insinuating that smoking weed is a guarantee of a shitty life, is ridiculously counter-productive.

Re:Younger cannabis users have reduced brain function, finds... by amrocha on Wednesday January 29, 2025 @10:14PM (#42874416)
It literally encouraged drug use through exposure
Re:Younger cannabis users have reduced brain function, finds... by piva00 on Thursday January 30, 2025 @04:24AM (#42876285)
Pointless is quite wrong though. Drugs can be dangerous and because of it should require a lot of thought, education about, and respect if you partake on it but they are definitely not pointless.

If used in ways that doesn't affect someone negatively (and here is where the danger, education, and respect part comes in) it can provide life experiences that you could never, ever have by being sober.

Doesn't mean that a sober experience is subpar, it's just different, and it's ok if you want to live that way but it's not the only and "right" way to live a life.

Re:Younger cannabis users have reduced brain function, finds... by iforgot22 on Thursday January 30, 2025 @11:43AM (#42879491)
There isn't much to be educated about. Scientific research about the long-term effects of any of these is inconclusive, even on alcohol and tobacco which is everywhere. All they know is smoking increases the risk of lung cancer.
Re:Younger cannabis users have reduced brain function, finds... by raincole on Wednesday January 29, 2025 @11:40PM (#42874924)
One interesting I noticed is that the common sentiment online on "War on drug failed" is "so we'd better surrender to drug".
Re:Younger cannabis users have reduced brain function, finds... by iforgot22 on Thursday January 30, 2025 @11:51AM (#42879566)
The related "legalizing weed will make people use it less" was a common argument before it was legal. We were actually taught that in college. Did not seem like a good-faith argument.
Re:Younger cannabis users have reduced brain function, finds... by cwalv on Wednesday January 29, 2025 @10:58PM (#42874687)
Putting the affects of marijuana abuse in the same category as meth or heroin is dishonest and dangerous. It destroyed their credibility.
Re:Younger cannabis users have reduced brain function, finds... by dkarl on Wednesday January 29, 2025 @10:04PM (#42874350)
I observe the same thing, but I think in a lot of towns and schools, like yours and mine, the kids who chose to smoke weed were the ones who saw themselves as unmotivated losers and screwups. The connection could have been a self-fulfilling prophecy.

I think there are enough places like that to skew any study that doesn't somehow control for it. It would be interesting to see if the result holds for kids who didn't see themselves that way, kids who are bright and ambitious or even just average, or if it only holds for kids who already saw themselves as underachievers before they started getting high.

Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @09:44PM (#42874232)
Some of the smartest programmers I know smoke marijuana quite regularly. I don't know if they all smoked at an earlier age but I know that 2 of them did.
Re:Younger cannabis users have reduced brain function, finds... by iforgot22 on Wednesday January 29, 2025 @10:11PM (#42874392)
I knew some top students in college who started smoking weed then and continued. They're still programmers or scientists now, which isn't surprising given their education and talent, but something's wrong every time I talk to them. They seem scatterbrained and unable to remember what either of us said a minute ago.

Edit: Forgot to specify, they're in their late 20s now.

Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @10:28PM (#42874499)
Sure but I know plenty of people who are dead sober who exhibit the same behavior.

I behave like that occasionally when I have too many unrelated tasks at once and am a little stressed. I hope people don't think it's because I was high.

Re:Younger cannabis users have reduced brain function, finds... by chris_wot on Wednesday January 29, 2025 @10:37PM (#42874544)
We are all like this some of the time. If anyone is like this consistently, then something is wrong.
Re:Younger cannabis users have reduced brain function, finds... by jrockway on Wednesday January 29, 2025 @10:21PM (#42874456)
> They seem scatterbrained and unable to remember what either of us said a minute ago.

I've never used weed and definitely have moments like this from time to time. I think I'm old. And that having 3000 Slack channels piping content into your brain 8 hours a day isn't real good either.

That said, I kind of understand the effect this thread is talking about. My youngest brother was doing a lot of smoking in high school and I definitely wonder about the long term effects.

Re:Younger cannabis users have reduced brain function, finds... by its_Caffeine on Thursday January 30, 2025 @04:25AM (#42876293)
Some of this is definitely social media use and short-form content consumption. My working memory improved significantly when I limited social media consumption and started reading instead. I personally haven't smoked weed in over 5 years.
Re:Younger cannabis users have reduced brain function, finds... by amrocha on Wednesday January 29, 2025 @10:16PM (#42874430)
Ok, and I know programmers and scientists that used to smoke in college and are just as sharp as ever.
Re:Younger cannabis users have reduced brain function, finds... by onemoresoop on Wednesday January 29, 2025 @10:29PM (#42874504)
Yep, the effects aren’t permanent. It seems people choose to be scatterbrained for some reason or another. I do smoke ocasionally and that is very little as I don’t like getting the anxiety/paranoia effects and weed is very potent these days. I only do it to zone off creatively, gives me the childhood magic which dampens the day to day stress. All in all it is a very positive experience. I do see kids these days overdoing it but hey, in my day kids were drinking more than today so these habits change over time
Re:Younger cannabis users have reduced brain function, finds... by Gud on Thursday January 30, 2025 @12:20AM (#42875132)
Mix with CBD only strains, a 10% THC/90% CBD ratio is vastly different and doesn't give that anxiety/paranoia, in my experience.
Re:Younger cannabis users have reduced brain function, finds... by beedeebeedee on Wednesday January 29, 2025 @10:41PM (#42874567)
Agreed- in fact, I think for the ones I know, it is a performance enhancer. For me, if I have an incredibly boring job to do, smoking weed enables me to keep going many many hours beyond what I could do without it. As I've gotten older, I've gotten used to boredom, so it's not necessary anymore, but still makes it much more fun
Re:Younger cannabis users have reduced brain function, finds... by userbinator on Wednesday January 29, 2025 @09:50PM (#42874260)
I know a few smokers (tobacco only) who lived into their 90s, and some of them were exposed to much worse in their daily lives when they were young (leaded gasoline, solvents, etc.), but I suspect those may be genetic outliers.
Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @10:11PM (#42874391)
Definitely. Conversely I know someone who died young of lung cancer but never smoked.
Re:Younger cannabis users have reduced brain function, finds... by AngryData on Wednesday January 29, 2025 @11:45PM (#42874946)
To be fair lung cancer as the biggest concern to smoking was just the advertising boogeyman to convince people to stop smoking, the vast majority of smokers die from heart attack and stroke, not lung cancer. But telling some 14 year old kid that they might just drop dead at 55 of a heart attack isn't exactly convincing, to them that is old as fuck and just dropping dead from a heart attack sounds like one of the best ways to go at the time.
Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @11:53PM (#42874997)
I did not realize that at all. Thanks for the info!
Re:Younger cannabis users have reduced brain function, finds... by okiebiokie on Wednesday January 29, 2025 @10:25PM (#42874484)
Did you ever think you’re just really dumb and think they are smart?
Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @10:31PM (#42874516)
Not at all because they are all tech directors or high level programmers who have been paid well to do it for decades.
Re:Younger cannabis users have reduced brain function, finds... by chris_wot on Wednesday January 29, 2025 @10:38PM (#42874547)
Yeah, that's not a true measure of intelligence.
Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @10:42PM (#42874578)
I don't disagree but they also don't display any of the symptoms laid out in the original post you are replying to.

Also I was replying to a person who signed up specifically to make a single troll post so I replied in kind.

Re:Younger cannabis users have reduced brain function, finds... by chris_wot on Thursday January 30, 2025 @12:25AM (#42875168)
Probably don't do that then.
Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Thursday January 30, 2025 @12:35AM (#42875202)
You did though

Ah I guess this is one of those "do what I say don't do what I do" situations

Noted

Re:Younger cannabis users have reduced brain function, finds... by chris_wot on Sunday February 02, 2025 @09:20PM (#42914231)
Don't respond to trolls.
Re:Younger cannabis users have reduced brain function, finds... by legitster on Wednesday January 29, 2025 @09:21PM (#42874070)
It's quite reminiscent of how long it took people to associate smoking with emphysema and lung disease. In hindsight it seems so obvious! But building evidence for even obvious conclusions can be surprisingly hard.
Re:Younger cannabis users have reduced brain function, finds... by bsder on Wednesday January 29, 2025 @09:26PM (#42874106)
> It's quite reminiscent of how long it took people to associate smoking with emphysema and lung disease.

It was obvious even back then.

The difference was that the crap you breathed in from air pollution as well as the garbage you were breathing in from working the mills and mines was likely to kill you before the bad effects of smoking kicked in.

Once we had the EPA and got rid of the other garbage, suddenly smoking actually mattered to your mortality.

Re:Younger cannabis users have reduced brain function, finds... by readthenotes1 on Wednesday January 29, 2025 @09:46PM (#42874241)
The EPA came years after the dangers of cigarette smoking were known, and months after the ban on cigarette ads was made in the USA.

Big Tobacco was really good at pushing/buying counter narratives (including but not limited to "think of all the poor tobacco farmers").

Why is marijuana considered so wonderful? Seems more like a grass roots movement ignoring the casualties along the way.

https://www.cdc.gov/tobacco-surgeon-general-reports/about/hi...

Re:Younger cannabis users have reduced brain function, finds... by triceratops on Wednesday January 29, 2025 @10:14PM (#42874413)
> Why is marijuana considered so wonderful?

It isn't considered "wonderful". It's just not worth putting people into prison over. It's still a vice, like tobacco, alcohol, or gambling.

There are also some important differences between it and cigarettes.

1. Way less actual smoking needed. Or not needed at all because edibles exist.

2. It isn't chemically addictive or habit-forming for most people.

3. There are legitimate medical applications for pain or nausea relief. Again, without smoking.

Re:Younger cannabis users have reduced brain function, finds... by cj on Wednesday January 29, 2025 @11:03PM (#42874714)
> 2. It isn't chemically addictive or habit-forming for most people.

I've never understood why people claim it's not addictive when there are well established symptoms experienced when withdrawing. Disruption in sleep quality, vivid dreams, insomnia, etc.

I was a nightly smoker for a long time (only after 8pm, never during the day) -- it took extraordinary effort and multiple attempts to quit. Perhaps there isn't a specific biological addiction that can be defined precisely, but it's definitely addictive nonetheless.

Re:Younger cannabis users have reduced brain function, finds... by triceratops on Thursday January 30, 2025 @09:05AM (#42877741)
"for most people"

If you were a nightly smoker you were already addicted. Most cannabis users don't use it daily. In that way it's like alcohol. This is in contrast to tobacco users, who use it like caffeine.

Re:Younger cannabis users have reduced brain function, finds... by cj on Thursday January 30, 2025 @05:47PM (#42882972)
By the same logic, you could say “cigarettes aren’t addictive for most people”.
Re:Younger cannabis users have reduced brain function, finds... by triceratops on Thursday January 30, 2025 @05:59PM (#42883083)
You could say that but you'd be wrong.

86% of cigarette smokers are daily smokers. [1]

Only 28% of cannabis users (note: not smokers, users) are daily users. 42% are daily or near-daily users. [2]

Cigarette smokers are 5 times more likely to be daily cannabis users. [3]

Most cannabis users don't use it daily. An overwhelming majority of cigarette smokers smoke (both tobacco and cannabis) daily. There's no comparison.

I'm very sorry for your struggles. They're not typical. I know that's cold comfort for you.

1. https://pmc.ncbi.nlm.nih.gov/articles/PMC5934666/

2. https://pubmed.ncbi.nlm.nih.gov/38775461/

3. https://www.publichealth.columbia.edu/news/cigarette-smokers...

Re:Younger cannabis users have reduced brain function, finds... by cj on Thursday January 30, 2025 @06:10PM (#42883166)
Touché.

Although those stats about cannabis support the idea that it’s addictive.

Daily or near daily use of nearly 50% of users sounds like it must be habit forming..

Re:Younger cannabis users have reduced brain function, finds... by triceratops on Thursday January 30, 2025 @06:18PM (#42883231)
> Daily or near daily use of nearly 50% of users sounds like it must be habit forming..

Practically all of those daily/near daily cannabis users (5/6th of them) are tobacco smokers, as I also pointed out.

From the third article I cited: https://www.publichealth.columbia.edu/news/cigarette-smokers... says, compared to non-smokers, smokers are 5 times more likely to be daily cannabis users.

Tobacco is intensely addictive.

Re:Younger cannabis users have reduced brain function, finds... by readthenotes1 on Thursday January 30, 2025 @12:46PM (#42880119)
"It isn't considered "wonderful".

We don't talk to the same people then

Re:Younger cannabis users have reduced brain function, finds... by bogwog on Wednesday January 29, 2025 @09:33PM (#42874153)
I didn't review the study (wouldn't even know how to do that), but I did read the article and it doesn't say anything about permanent effects. In fact, the participants were aged 22-36, so definitely past high school age.

The title makes it sound like smoking weed causes permanent brain damage, but I don't think that's what they found at all

> The researchers found that both recent and heavy lifetime cannabis use was associated with a statistically significant reduction in brain activity only during the working memory task.

So they observed reduced memory function during a memory task for people who smoked recently or were "heavy" smokers, but not in any of the other tests. Maybe the heavy smokers have permanent brain damage, but the OP at least don't mention any findings like that.

Re:Younger cannabis users have reduced brain function, finds... by readthenotes1 on Wednesday January 29, 2025 @09:50PM (#42874263)
They did find trouble with long-term heavy use

"The researchers found that both recent and heavy lifetime cannabis use was associated with a statistically significant reduction in brain activity only during the working memory task."

They theorized that abstention may help long term users, but that wasn't in write-up

Re:Younger cannabis users have reduced brain function, finds... by Guthur on Wednesday January 29, 2025 @10:07PM (#42874369)
Also this is not necessarily a universally bad thing.

For example if I need to work through something from first principles as opposed to instant recall I may develop a more novel understanding.

Anecdotally I have found a number of individuals that are great a remembering and therefore excel in some academic situations are the quite intellectual rigid and unable to think beyond what they are told.

But as a disclaimer I'm not advocating marijuana use as it can have detrimental affects on motivation for example.

Re:Younger cannabis users have reduced brain function, finds... by dgacmu on Wednesday January 29, 2025 @10:12PM (#42874398)
You are misunderstanding the meaning of working memory. Working memory is very short-term and small; it's what you use when you read the second half of an equation and still remember what the first half said.

A reduction in working memory is a direct reduction in cognitive capability for some/many tasks.

Re:Younger cannabis users have reduced brain function, finds... by kazinator on Wednesday January 29, 2025 @09:29PM (#42874125)
> pretty bad at remembering things, most work dead end jobs and are generally unmotivated

So, like, stoners?

Re:Younger cannabis users have reduced brain function, finds... by Gigachad on Wednesday January 29, 2025 @10:07PM (#42874371)
This has been a stereotype for forever. Would be more surprising if they found weed usage didn't correlate with these things.
Re:Younger cannabis users have reduced brain function, finds... by JohnMakin on Wednesday January 29, 2025 @09:17PM (#42874030)
dang what about other people outside your sample size that did smoke under 18 and then became successful? what was your control group also?
Re:Younger cannabis users have reduced brain function, finds... by frogpelt on Wednesday January 29, 2025 @09:30PM (#42874128)
If you’re looking controlled study results you could refer to the post.

If you want to provide your own anecdotal evidence to refute the parent comment, fire away.

Re:Younger cannabis users have reduced brain function, finds... by JohnMakin on Wednesday January 29, 2025 @10:10PM (#42874389)
My own anecdotal evidence is myself and many of my peers smoked plenty well under 18 and many of us became successful or reasonably so. the whole moral panic over cannabis use has been overwrought and fraught with bad science. now, would I want my child to use before they were 25? absolutely not. is it a catastrophe if they did? also no.
Re:Younger cannabis users have reduced brain function, finds... by mc3301 on Thursday January 30, 2025 @02:37AM (#42875766)
Why wouldn't you want your child to use before 25?
Re:Younger cannabis users have reduced brain function, finds... by JohnMakin on Thursday January 30, 2025 @02:45AM (#42875807)
because the mind is developing and the science isnt conclusive as to the factors that affect that. the original claim, if im understanding this thread, is that all marijuana use before 25 will make you functionally useless. I am refuting that claim with the anecdotal evidence of myself and many of my peers that that is absolutely not the case - hope that clarified things.
Re:Younger cannabis users have reduced brain function, finds... by aurareturn on Thursday January 30, 2025 @12:28PM (#42879949)
What was the average THC content when you were a teen?
Re:Younger cannabis users have reduced brain function, finds... by JohnMakin on Saturday February 01, 2025 @08:35PM (#42904695)
High. Medical state.
Re:Younger cannabis users have reduced brain function, finds... by OnlineGladiator on Wednesday January 29, 2025 @10:04PM (#42874354)
Well, the vibe I'm getting from these comments is people reacting emotionally, and assuming the study concludes that smoking cannabis causes memory problems. But the article itself says:

> The study has limitations. It was an uncontrolled, cross-sectional study, so the association seen between cannabis and brain function can’t be considered causal.

So even this study doesn't say it's causal, and admits to many other limitations. I agree with your point about evidence and science though, but this is hardly a smoking gun that cannabis makes you dumber.

Re:Younger cannabis users have reduced brain function, finds... by bsder on Wednesday January 29, 2025 @09:22PM (#42874074)
It would be more shocking if cannabis didn't do this.

Most adolescents who get heavily into any drug generally have issues--this includes alcohol and nicotine, as well.

Re:Younger cannabis users have reduced brain function, finds... by JohnMakin on Thursday January 30, 2025 @03:27AM (#42876021)
Yea but what’s the cause here? maybe seeking substances is a symptom itself, and not a cause for the issues.

teen drug use is trending downward and i think thats a good thing so stuff being posted like this just sounds weird to me - as a teen “drug user” that now has a computer science degree, I’d say the kids maybe need a huff of something, they dont seem ok to me. of course thats just my anecdotal opinion, dont do drugs, of course.

Re:Younger cannabis users have reduced brain function, finds... by bawolff on Wednesday January 29, 2025 @09:38PM (#42874191)
Maybe, but i also think that the type of people who smoke all day as teenagers probably also have factors that will hurt them later in life unrelated to the smoking.

Its good to have actual data.

Re:Younger cannabis users have reduced brain function, finds... by readthenotes1 on Wednesday January 29, 2025 @09:53PM (#42874285)
The age-old complaint about smoking weed was that it halted people's maturation -- they did not face those factors that will continue to hurt them.

Or "Reality is for people who can't handle drugs"

Re:Younger cannabis users have reduced brain function, finds... by dottjt on Wednesday January 29, 2025 @09:39PM (#42874198)
As someone who was once a young weed smoker, I get the sense that this is more correlation than causation. I know as many failures as I do successes from this position.

Those who have been failures were going to be failures anyway irrespective of whether they smoked weed or not, as was the case for those who ended up successful.

With that said, I don't deny that weed smoking at a young age would likely affect your brain negatively. But I don't think it determines what your outcome will be.

Re:Younger cannabis users have reduced brain function, finds... by math_dandy on Wednesday January 29, 2025 @10:14PM (#42874414)
The article does not claim that smoking determines outcomes for any individual. It gives statistical evidence that outcomes (measured brain activity while performing certain tasks) for weed smokers are worse than for non-smokers __on average__, and that this pattern persists in various subpopulations determined by demographic and lifestyle factors.
Re:Younger cannabis users have reduced brain function, finds... by dottjt on Wednesday January 29, 2025 @11:13PM (#42874772)
Thank you for clarifying, but I was responding to the commenter. Not the article
Re:Younger cannabis users have reduced brain function, finds... by nradov on Wednesday January 29, 2025 @09:51PM (#42874270)
I could never understand why parents would allow able-bodied adult children to live with them (regardless of marijuana use or whatever). It's not doing them any favors. Some people need a little tough love to get launched in life. Drag them down to the Army recruiting office or something.
Re:Younger cannabis users have reduced brain function, finds... by ziddoap on Wednesday January 29, 2025 @09:55PM (#42874295)
>I could never understand why parents would allow able-bodied adult children to live with them

Agreed, just kick your kids out onto the street and let them fend for themselves. I got mine, they can get theirs. Right?

Why don't they just go buy a house or something?

Re:Younger cannabis users have reduced brain function, finds... by grigri907 on Wednesday January 29, 2025 @10:01PM (#42874325)
As an able-bodied adult child who lived with his parents for 2 years, it absolutely did me favors in that I was able to save a small down payment for a home. Some people do need tough love, and others don't. It's a case by case basis.
Re:Younger cannabis users have reduced brain function, finds... by iforgot22 on Wednesday January 29, 2025 @10:16PM (#42874428)
Because a single person doesn't need a separate house. In many countries, the default is for children to stay home until they're married. Now, if that person is like 30 and doesn't appear to be going anywhere, maybe that's a problem.
Re:Younger cannabis users have reduced brain function, finds... by zen928 on Thursday January 30, 2025 @03:12PM (#42881706)
Hopefully, it's to help enable their success and wellbeing in such a way that it gives them steps towards becoming self-sufficient. Your tone is slightly crass, but you're not wrong that enabling bad behavior in your children is in opposition to your goals as a parent. If you can reason that your nourishment of resources gives them opportunity without becoming a direct dependence and the cost to yourself isn't too high, I don't see it being a problem. Essentially, it varies on how you see your role as a parent and your relationship with your child.
Re:Younger cannabis users have reduced brain function, finds... by stanislavb on Wednesday January 29, 2025 @10:01PM (#42874329)
"only one is successful, and It's because he bought BTC in 2014 and still has around 20 of them" - I'd say that's luck and not success :)
Re:Younger cannabis users have reduced brain function, finds... by calimariae on Wednesday January 29, 2025 @10:07PM (#42874376)
The success part is holding them for 10 years through all the ups and downs
Re:Younger cannabis users have reduced brain function, finds... by hn_throwaway_99 on Wednesday January 29, 2025 @10:40PM (#42874563)
This whole thread is pretty funny to me, because from a group that generally prides themselves on being logical/rational and valuing the scientific method, it just highlights why anecdotes are generally useless in topics like this.

Sure, this is just a forum, and it's not like many folks are performing experiments with statistical analysis on this topic. I just think it's funny how the language that people using imply that they are so sure that their anecdote is the right one: "This is such an obvious problem", "Your position is harmful", "Some of the smartest programmers I know", etc. I mean, the whole reason statistics was invented was to actually bring rigor to observational analysis.

At a previous company I worked at, the server from where we shared A/B test results was named, as an ironic joke, "Obviously". It was done to deliberately highlight the point that it was pretty easy to come to any conclusion (right or wrong) and use language like "obviously" to kind of imply that the experiment wasn't necessary. I think there were even some example where this kind of language was used to argue the exact opposite possible outcomes to highlight why statistical analysis is so important.

Re:Younger cannabis users have reduced brain function, finds... by ghfhghg on Wednesday January 29, 2025 @11:37PM (#42874909)
You do realize that the comments in replies quoting with counter anecdotes is specifically to point out that anecdotal evidence is just that and nothing more?

I think you might have missed out on some subtleness.

Re:Younger cannabis users have reduced brain function, finds... by cwalv on Wednesday January 29, 2025 @10:42PM (#42874573)
I agree that short term memory loss being a side effect of heavy use is common knowledge to anyone who is or knows a heavy user.

But I think you shouldn't be so confident that smoking when young is a huge problem long term.

I would have been in the 'heavy user' category by the time I was 17, and I've had the odd experience of persistent short term memory loss (e.g., having multiple people tell me 'you just asked me that' with a bewildered look). I also quit smoking when I was 17, and haven't had any noticable symptoms since I was 20 (> 20 years ago). I doubt if anyone who knows me would say I'm not 'successful.'

Not recommending heavy use, to be sure. Just saying that it's not necessarily a permanent, long-term effect.

Re:Younger cannabis users have reduced brain function, finds... by EdwardDiego on Wednesday January 29, 2025 @09:47PM (#42874246)
My anecdote can beat up yours :D
Re:Younger cannabis users have reduced brain function, finds... by liontwist on Wednesday January 29, 2025 @09:59PM (#42874317)
As opposed to data? What data? Imagine how hard this is to study:

- can we identify groups who regularly use and don’t use - and isolate other lifestyle factors - and follow them for years of the life - and get them to accurately report data - and determine which life outcomes can be attributed to cannabis use

No study like that is going to be compelling. The anecdote is going to be just as useful in your personal life. It’s how humans learn.

Re:Younger cannabis users have reduced brain function, finds... by EdwardDiego on Sunday February 02, 2025 @03:17AM (#42907073)
Sure, I very much agree. My anecdotes contradict the previous anecdotes.

Is it QED? No, the best that can be hoped for is, "Hmm, that's interesting".

Re:Younger cannabis users have reduced brain function, finds... by kardianos on Wednesday January 29, 2025 @10:02PM (#42874338)
This so much. I grew up in Oregon when it was legal for "medical" purposes. You could tell who smoked pot; they were not chill, they were dumb.
Re:Younger cannabis users have reduced brain function, finds... by kylebenzle on Wednesday January 29, 2025 @10:44PM (#42874588)
Interesting your only metirc of success is how much money someone has.
Re:Younger cannabis users have reduced brain function, finds... by ldjkfkdsjnv on Wednesday January 29, 2025 @09:50PM (#42874259)
I smoked a lot as a teenager and it had bad long term effects. There is no doubt. Most friends I had, who were upper middle class, did not make it through college.
Re:Younger cannabis users have reduced brain function, finds... by seattle_spring on Wednesday January 29, 2025 @09:33PM (#42874149)
All of my friends, including myself, smoked constantly from 16 to 25. We're all now college graduates with a range of successful careers, including staff software eng (me), ER doc, and 2 lawyers.

Ironically, some of the most anti-weed people I knew growing up are either hard drug addicts now, or deeply hateful fundamentalists.

Re:Younger cannabis users have reduced brain function, finds... by jMyles on Wednesday January 29, 2025 @09:41PM (#42874212)
This comment is so strange. You've clearly described a group prone to confounding factors, identified a viable case study outlier, and then just concluded that the dependent variable is causally impactful anyway.

Don't you think it's more likely that the cannabis use in this group is highly correlated with other risk factors?

Re:Younger cannabis users have reduced brain function, finds... by LoganDark on Wednesday January 29, 2025 @10:02PM (#42874340)
> Out of all of them, only one is successful, and It's because he bought BTC in 2014 and still has around 20 of them.

Holy lucky. Bet just about everyone on HN would wish this were them.

[dead]
Re:Younger cannabis users have reduced brain function, finds... by op00to on Wednesday January 29, 2025 @09:45PM (#42874236)
We don’t do personal attacks here, please.
Re:Younger cannabis users have reduced brain function, finds... by amrocha on Wednesday January 29, 2025 @10:23PM (#42874471)
The original comment implies their “friends” are failures, which i don’t know about you but I wouldn’t say that about any of my friends, and wouldn’t expect any of my friends to say that about me.

Pointing that out is not a personal insult.

Re:Younger cannabis users have reduced brain function, finds... by throwaway314155 on Friday January 31, 2025 @12:25AM (#42884936)
Thanks for being the only person to understand that I was legitimately trying to discourage toxic behavior, not condone it.

This site sometimes...

Re:Younger cannabis users have reduced brain function, finds... by m3kw9 on Wednesday January 29, 2025 @09:43PM (#42874224)
Snoop dogg smokes it, not that I’m endorsing it
Re:Younger cannabis users have reduced brain function, finds... by interludead on Thursday January 30, 2025 @03:31AM (#42876037)
And it’s not just about memory... It’s the whole motivation thing