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.
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.
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.
Thanks for the clarification
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."
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.
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.
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.
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.
>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.
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.
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.
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.
> 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.
>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.
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.
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.
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.
Edit: Forgot to specify, they're in their late 20s now.
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.
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.
Also I was replying to a person who signed up specifically to make a single troll post so I replied in kind.
Ah I guess this is one of those "do what I say don't do what I do" situations
Noted
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.
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...
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.
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.
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.
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...
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..
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.
We don't talk to the same people then
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.
"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
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.
A reduction in working memory is a direct reduction in cognitive capability for some/many tasks.
So, like, stoners?
If you want to provide your own anecdotal evidence to refute the parent comment, fire away.
> 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.
Most adolescents who get heavily into any drug generally have issues--this includes alcohol and nicotine, as well.
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.
Its good to have actual data.
Or "Reality is for people who can't handle drugs"
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.
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?
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.
I think you might have missed out on some subtleness.
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.
- 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.
Is it QED? No, the best that can be hoped for is, "Hmm, that's interesting".
Ironically, some of the most anti-weed people I knew growing up are either hard drug addicts now, or deeply hateful fundamentalists.
Don't you think it's more likely that the cannabis use in this group is highly correlated with other risk factors?
Holy lucky. Bet just about everyone on HN would wish this were them.
Pointing that out is not a personal insult.
This site sometimes...
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.