Holy crap Teenagers really should not smoke weed

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This article was published by the Lancet, one of the most prestigious medical journals. People in this thread are way to quick to dismiss it because "causation=/=correlation". If you read the article you see that the study accounted for 53 confounding factors and still found a strong association. An RCT would be the gold standard here obviously, but that would never be approved by an ethics committee.

Appeal to authority. Just because Lancet published it doesn't mean it's true. We all have brains and we can read and draw conclusions from what we've read.

Lancet has published highly criticized articles before, including "mass privatization in Russia was correlated with higher mortality rates", which is about as bogus as this one.

More importantly, it is not a MEDICAL study. The study conducted zero scientific experiment on the effects of weed on the human body.

Yea I don't really understand these studies. It isn't drug that's an issue it's the people that use it.

If you take away weed from a lazy person, he's most likely still going to be a lazy person.

You got it. Like the ridiculously stupid Lancet article I quoted above. Higher mortality rates in Russia is due to alcohol abuse, which is of course helped by having more money to buy alcohol.

But according to some people, it's Lancet, we shouldn't even question it.
 
Appeal to authority. Just because Lancet published it doesn't mean it's true. We all have brains and we can read and draw conclusions from what we've read.

Lancet has published highly criticized articles before, including "mass privatization in Russia was correlated with higher mortality rates", which is about as bogus as this one.

More importantly, it is not a MEDICAL study. The study conducted zero scientific experiment on the effects of weed on the human body.

Did you actually read the article? What are your specific criticisms? What would you have done to change the study?
 
Much better than establishing policy by gut feeling or personal anecdotes.

Why is that the alternative?

How about not establishing a policy until you have better evidence?
 
But isn't this how they test out any drug? For example, when they released those studies years back that said SSRI users committed suicide more often. It was frequent enough that I think it's listed as a symptom now.

The only thing we can hope for is that the study is as impartial as possible and considers other factors.

And I think most of us have anecdotal evidence where we know somebody who is addicted to it and never amounted to anything. There are some who can be constantly high and seem to function somewhat normally, but they are few.

The key is moderation. Every drug is bad for you if you consume too much.

Not just any drug, any and everything in existence. Statistical studies are generally biased, don't account for countless variables, and with a non-controlled environment variables are even less accounted for.

With that said, marijuana still makes people lazy. People don't need statistics to know that. My friend smokes like an 1/8th a day, don't do shit.
 
The antiscience in this thread so far is on par with conservative's dismissal of global warming studies.

Bullshit.

If anything, it's people implying that a study should not be doubted because it was published in a prestigious journal that are antiscience.

The whole "who are you to criticize?" angle is just a bunch of shit.

With that said, marijuana still makes people lazy. People don't need statistics to know that. My friend smokes like an 1/8th a day, don't do shit.

Or is it that lazy people gravitate to enjoying marijuana frequently? Anecdotal evidence should not be used to make a definitive statement. I guarantee that there are people who are highly motivated and not lazy who also smoke marijuana.
 
Did you actually read the article? What are your specific criticisms? What would you have done to change the study?

It is a study about lifestyle choices, not the actual effects of weed has on the human body. Is it that hard to understand? All it says is that people who choose to do A are more likely to be B. It doesn't tell you what A does to your body.

Bullshit.

If anything, it's people implying that a study should not be doubted because it was published in a prestigious journal that are antiscience.

The whole "who are you to criticize?" angle is just a bunch of shit.

It is a logical fallacy.

If anything, people who keep waving Lancet Lancet in our face are the one who behaves like conservatives.
 
Bullshit.

If anything, it's people implying that a study should not be doubted because it was published in a prestigious journal that are antiscience.

The whole "who are you to criticize?" angle is just a bunch of shit.

Again, what did you find wrong with the study? I'm open to have the conversation if have legit complaints other than a blanket "causation=/correlation" statement that conservatives use to dismiss global warming.

It is a study about lifestyle choices, not the actual effects of weed has on the human body. Is it that hard to understand? All it says is that people who choose to do A are more likely to be B. It doesn't tell you what A does to your body.

I think you quoted the wrong person because you didn't answer my questions.
 
I would be interested to see the same study with alcohol instead of weed, My guess would be that the statistics would be similar. The goodie goodies who don't drink or smoke in high school perform better in school, stop the presses.
 
They didn't seem to factor in personality and motivation, as well as prior knowledge of effects of drugs (aka drug culture).




Not sure about y'all, but anecdotally speaking it seems to be pretty well known pot is "supposed" to "chill you out."


Newsflash: People that want to do well in school don't take pot to study, they take Ritalin.

"The study accounted for 53 confounding factors and still found a strong association."
 
this discussion is the same as 20 years ago: Nintendo

and that discussion was the same as 20 years before: marihuana and lsd.

and THAT discussion was the same as 20 years before it: probably masturbating to drawings ...
 
Again, what did you find wrong with the study? I'm open to have the conversation if have legit complaints other than a blanket "causation=/correlation" statement that conservatives use to dismiss global warming.



I think you quoted the wrong person because you didn't answer my questions.

I dunno man. Here they're basically doing exactly that: they're comparing usage statistics with dropout statistics with no other frame of reference. It does seem that type of study.
 
Bullshit.

Or is it that lazy people gravitate to enjoying marijuana frequently? Anecdotal evidence should not be used to make a definitive statement. I guarantee that there are people who are highly motivated and not lazy who also smoke marijuana.

Well, I've known plenty of people, and have known plenty of people that know plenty of other people who were perfectly motivated in their studies/sports/life before they started smoking, and not very much so afterward.

Weed gets you high, when most people are high they get tired and slow down. Personally it makes me really tired for the next 6 hours or so after I smoke it (after the possible initial giddiness). I also don't get very good sleep. Do it a couple times a day and I would be tired all the time.
 
I wonder if high school dropouts and people who are suicidal are more likely to be honest than others on the topic of when they first tried illegal drugs. Hmmmmm......
 
Any study about "Why are our kids dropping out?" always makes me laugh. Everyone always wants to pin it on something, but seriously it boils down to mostly that kids just don't wanna go to school because school sucks. And as a kid you don't really weigh your future with your current decisions.

Even then, how are you going to make a convincing argument to a teenager they should continue? "Hey you should continue school because without it you can't go to college, to do more shitty school work while playing a ton in tutition. Then if you're lucky you might get a job to pay off that debt in 10+ years. WELCOME TO THE MACHINE!"

Ya I could see why the dropout rates are what they are.
 
I dunno man. Here they're basically doing exactly that: they're comparing usage statistics with dropout statistics with no other frame of reference. It does seem that type of study.

But the frame of reference is the dropouts and they control for a myriad of other factors including other drugs, age , gender etc. It doesn't seem like "that type of study" at all.

My goodness people, is it that hard to question your beliefs? Take a look at them and say "Wow, maybe I should look deeper into what this means?" Like people are saying, this anti-science thing is ridiculous. Just because you don't like the results of something doesn't mean you should ignore it. Understand it and discredit it properly if it's discreditable, or accept it if it's not.
 
Did one of the factors include the person's ability to understand "delayed gratification"?

Developing a drug habit early, like any other addiction, is probably a compounding factor in limiting this ability, not (strictly) a side effect of it. Lots of people develop their concept of adult responsibility as teens, after all. To use another example, I don't think you'd do a study on teen sexual activity based on factors such as their capacity to give consent. (But I'd imagine consent laws were based on understandings about teen sexual activity.)
 
Even when accounting for confounders, the researcher still found a strong, dose-dependent relationship. I'm not sure how you say that means nothing.

Because if I was a student and I spent 8 hours a week high instead of not high, it has a negative effect on my study. Doesn't take a study to figure that out.

You keep bringing up global warming. Global warming studies actually studied the actual effects of human pollution on climate. I suggest they do the same here.
 
Weed addiction is mainly psychological, but of course if you over use it there are going to be consequences in the long term. However, it doesn't look like the study correlates effectively marijuana addiction to proficiency in school, as opposed to factors like depression etc. There's a reason why teens start smoking heavily in some cases, and I'd wager it's usually linked to some form of distress in their own school/household that makes the want to try to escape reality.
 
Because if I was a student and I spent 8 hours a week high instead of not high, it has a negative effect on my study. Doesn't take a study to figure that out.

You keep bringing up global warming. Global warming studies actually studied the actually effects of human pollution on climate. I suggest they do the same here.

They found a dose-dependent relationship.
 
Again, what did you find wrong with the study? I'm open to have the conversation if have legit complaints other than a blanket "causation=/correlation" statement that conservatives use to dismiss global warming.

The study itself looks fine at first glance. That's not what I'm criticizing. It's the conclusions that are being made that are problematic.
 
Because if I was a student and I spent 8 hours a week high instead of not high, it has a negative effect on my study. Doesn't take a study to figure that out.

You keep bringing up global warming. Global warming studies actually studied the actual effects of human pollution on climate. I suggest they do the same here.

This was done by various health departments, dude.

http://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(14)70307-4/abstract

yup.
After covariate adjustment, compared with individuals who had never used cannabis, those who were daily users before age 17 years had clear reductions in the odds of high-school completion (adjusted odds ratio 0·37, 95% CI 0·20—0·66) and degree attainment (0·38, 0·22—0·66), and substantially increased odds of later cannabis dependence (17·95, 9·44—34·12), use of other illicit drugs (7·80, 4·46—13·63), and suicide attempt (6·83, 2·04—22·90).


I wish I had full access to the study. Going by the abstract is terrible.
 
I can't find a list of all the factors, but even so, it still doesn't imply causation.

The only way to get actual proof of causation is to do something unethical (to conduct an actual study with actual humans).

Also, this is a pretty well-known experiment that explores personality.

Did one of the factors include the person's ability to understand "delayed gratification"?


http://en.wikipedia.org/wiki/Stanford_marshmallow_experiment

Sorry, Sir Ronald Fisher, but you lost that debate decades ago. And why would the experiment have to account for that? yes, there's always a chance of an unexpected confounding factor, but those chances are increasingly smaller the more controlled your experiment is.

The reason why smoking cigarettes cause lung cancer was found in a lab, with actual science behind it.

Try again.

Mechanism and causes of cancer aren't very well understood now, let alone during the mid 1960's.
 
The study itself looks fine at first glance. That's not what I'm criticizing. It's the conclusions that are being made that are problematic.

What conclusion is being made, exactly? "Teens who smoke weed daily" are more likely to not finish high school. It is the data that says this, not the conclusions. The conclusion is that "there may not be a safe threshold for use" among teens, which given that the data demonstrates that use is a risk factor is a pretty good conclusion, worthy of further investigation.
 
The study itself looks fine at first glance. That's not what I'm criticizing. It's the conclusions that are being made that are problematic.

These are the results directly from the abstract of the article:

We recorded clear and consistent associations and dose-response relations between the frequency of adolescent cannabis use and all adverse young adult outcomes. After covariate adjustment, compared with individuals who had never used cannabis, those who were daily users before age 17 years had clear reductions in the odds of high-school completion (adjusted odds ratio 0·37, 95% CI 0·20—0·66) and degree attainment (0·38, 0·22—0·66), and substantially increased odds of later cannabis dependence (17·95, 9·44—34·12), use of other illicit drugs (7·80, 4·46—13·63), and suicide attempt (6·83, 2·04—22·90).

They conclude that:

Adverse sequelae of adolescent cannabis use are wide ranging and extend into young adulthood. Prevention or delay of cannabis use in adolescence is likely to have broad health and social benefits. Efforts to reform cannabis legislation should be carefully assessed to ensure they reduce adolescent cannabis use and prevent potentially adverse developmental effects.

What is your criticism with that?
 
Thank goodness I picked it up after high school while in college, thank you baby Jesus.

I always wondered if there is some kind of shame against it. There's some very intelligent people and people who made it very far in life who smoked pot. Hell, our president smoked pot. I think it all depends on who you are. Plus at that age you're building that foundation to your adult life. They should save the pot smoking for when they're out at least.

I don't smoke anymore. I did when I was a teen because it seemed relaxing, enjoyable, and so forth. I can tell you all about the great times smoking with friends. If I didn't have responsibilities or if I was retired then that would be another story. I don't think it's that dangerous because we have people consuming alcohol. The alcohol can become a much more serious problem.

You get some music going, have a group of people (girls and guys), at a nice house, and it makes for a very enjoyable and memorable experience. I think pot like alcohol shouldn't be in the hands of people under 18 or 21. Teens need to know that real life is coming and they can't always be that comfortable and lazy.
 
I started when I was 15 and I was valedictorian

Anecdotal suck it

edit:

Hmmm

Methods
We integrated participant-level data from three large, long-running longitudinal studies from Australia and New Zealand: the Australian Temperament Project, the Christchurch Health and Development Study, and the Victorian Adolescent Health Cohort Study. We investigated the association between the maximum frequency of cannabis use before age 17 years (never, less than monthly, monthly or more, weekly or more, or daily) and seven developmental outcomes assessed up to age 30 years (high-school completion, attainment of university degree, cannabis dependence, use of other illicit drugs, suicide attempt, depression, and welfare dependence). The number of participants varied by outcome (N=2537 to N=3765).
 
But isn't this how they test out any drug? For example, when they released those studies years back that said SSRI users committed suicide more often. It was frequent enough that I think it's listed as a symptom now..
That's not how it works, you need to think about the counter-conclusion.
Are they smoking because they aren't doing well at school, or is there a common or unrelated other cause?

The way to avoid is to do a randomized controlled experiment. Get a statistically significant population group. Randomly put them in 2 groups. One smoking pot the other not. Note how many people graduate (without knowing if they smoked). Correct for as many confounding factors as you can. At the end of the study, unblind the result.

Ideally you'd do the study double-blind, i.e. give one group 'fake-pot', but I don't know how you could do that :p.
 
Obvious study.

Long term drug use whether its marijuana, nicotine, alcohol, etc. is going to have its side effects.

Any sort of mind-altering drug is going to have a negative effect on the brain- especially one that is still undergoing development.
 
I don't like the results from this study so I will believe the other studies.

Good thing science gives you research that says everything is good and everything is bad so you can just believe whatever you want.
 
These are the results directly from the abstract of the article:



They conclude that:



What is your criticism with that?

Because it's implying that the weed caused these things to happen and that reducing or removing the weed element would improve those factors when that is not what the data show.
 
I read that, dude.

They used the method described in the OP which we have already debated so what's your point?

That you are wrong that they didn't take into account the way drugs affect the human brain. I'm not saying this is a spotless study, but I don't see you citing hard evince. I don't have access to the study, so I am not going to make blanket statements about their methods.
 
Sorry, Sir Ronald Fisher, but you lost that debate decades ago. And why would the experiment have to account for that? yes, there's always a chance of an unexpected confounding factor, but those chances are increasingly smaller the more controlled your experiment is.

But there are an enormous amount of factors and variables in this issue. What if kids who smoke weed are more likely to spend time with their hobby than studying? What if kids with helicopter parents are also more likely to be concerned with grades? What if kids who want to smoke weed think they're too cool to do homework? What if kids who smoke weed are disproportionately male, and thus less likely to do well in school?

What we know is that "kids who smoke weed daily are less likely to succeed in school". That absolutely does not mean "THC use causes a drop in youth intelligence", as many people in this thread seem to think.
 
Obvious study.

Long term drug use whether its marijuana, nicotine, alcohol, etc. is going to have its side effects.

Any sort of mind-altering drug is going to have a negative effect on the brain- especially one that is still undergoing development.

Obama said the only problem with pot is that, like alcohol, has an addiction problem. Too much use. If you just smoked a joint or a hit.. that goes away very fast. It's pot, it isn't gasoline or cat litter. I think people are scared of it, but hell there's worse medications out there. Pot isn't like pain pills or anxiety medication either.

Obama%20Smoking%20Pot%20504.jpeg


Teens don't smoke, focus on your education. Let the adults enjoy the munchies.
 
That you are wrong that they didn't take into account the way drugs affect the human brain. I'm not saying this is a spotless study, but I don't see you citing hard evince. I don't have access to the study, so I am not going to make blanket statements about their methods.

Yeah, can't really say anything without the full study. I don't think my old campus has access to this journal.
 
I don't like the results from this study so I will believe the other studies.

Good thing science gives you research that says everything is good and everything is bad so you can just believe whatever you want.

This is a prime example of not understanding what the study even means :(

This study doesn't say weed is good
This study doesn't say weed is bad
It simply says there's a correlation, and a strong one at that, that people who smoke weed during skill are more likely to drop out.

Neither does it say weed CAUSES the people to drop out (or vise versa)

It's simply a sign that we should investigate the relationship between weed use and scholastic success to see how we might be able to increase the chances of student graduating. Why is this a bad thing?
 
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