LOL @ "The science". This is one of the most ridiculous attempts you've made to feel superior to other people than I've seen in a while. You didn't read these. You just googled "marijuana and psychosis", scrolled down until you saw "nih.gov" and something with "science" in the name and copy/pasted them without having opened them. I literally just recreated the search. I see exactly what you did.
Anyway, as for the links themselves:
Link 1: You didn't even read it. They used 15 subjects. If you knew the slightest thing about how any of this works, you would have known that 15 subjects does not produce a statistically significant results, and stopped reading.
But you were lying and trolling so you just pasted it.
Second problem: They didn't give those 15 subjects marijauana. They gave them THC. Marijuana also contains CBD, and that'll become important in a bit. Anyway, based on this statistifically insignificant data, they said THC was found to alter one set of prefrontal-striatal interactions, and that when tested, individuals had increased difficulty in telling which stimuli were important and which weren't in a computer simulation. Separately, that there are also altered prefrontal-striatal interactions in people with psychosis, which causes other difficulties in salience attribution (the stuff about stimuli). They don't say that it's the same set of interactions that are altered - that's merely left for the reader to insert of their own accord. They also don't say that they're altered to the same extent or in the exact same way.
But, it ALSO said that CBD, also in marijuana, had the exact opposite effect. Remember I said that would become important? Well, because you were just lying and trolling, you probably aren't even reading this. But in case someone else wants to actually have an honest discussion, what this all means is......
They're really just saying
well, on our read of this study we won't provide to you, THC seemed to do something to stimuli recognition sort of similar to what pyschosis does to stimuli recognition, so maybe THC can create psychosis-like symptoms (helpfully not listed or described) - oh but another substance in marijuana has the exact opposite effect AND the people in our statistically useless study weren't given CBD.
(There's also the ever-present problem that this is a media article that doesn't seem to link to the actual study itself, and the media just about always cherry-picks what it wants from studies deceptively).
Link 2 isn't a "study". It's a case report. A report
about one single person. And if you'd read it, you'd see in the discussion that they say "The debate remains as to whether or not cannabis can cause schizophrenia and bipolar disorder in an otherwise healthy individual." It goes on to note what I already noted pages ago: any of the extreme-sounding effects noted by ludin are relegated to "heavy usage" and are also very very very rare.
Link 3. Same problem. Opens with a case review of a single person. The rest is behind a paywall (so you quite obviously did
NOT read it).
Nothing you posted contradicts anything I said in this thread. Every single psychoactive or pharmacological substance (hope you know what those words mean) has a litany of possible side effects. Overuse of any such substance increases the risk and severity of side effects.
When you're talking about pot, every single one of the extreme-sounding side effects you and/or ludin have copy/pasted after a google search have turned out to be only presented in very very very tiny amount of cases, and in situations in involving heavy use over a long period of time (aka, 'abuse').
There are tons of similar side effects for all sorts of OTC medications. They don't put the full long lists on the labels because said side effects are similarly extremely rare and/or only tend to present when the product is misused. But there are. Get a Physician's Desk Reference and find out. (I actually used to read my father's).
:shrug:
But, you know, troll and lie away. Maybe you can have a pre-emptive go at all the people about to become storm victims in Florida next.