After working at the NIMH for the past year and a half and doing neuroimaging on schizophrenics, I have come to one conclusion about the brain:
We dont fully understand how it works.
Choosing sides on pot=good or pot=bad is kinda useless as we cant really say with 100 percent certainty what it does to us. I mean, we arent even sure how our brains are able to retain such vast amounts of information and how we encode that information. Our lack of understanding of such basic things(I think) really prevents us from being able to say if anything is good or bad per se for the old noggin. It seems as if we all just let things go for a little bit and if it doesnt kill then we just accept it as good for the time being until proven otherwise.
There are some areas of the brain that we have totally figured out like V1 and much of the visual cortex, but then there's the rest of the brain on the cellular level and the molecular biology within the neurons...
We're always finding out some new things about the brain so it's still fuzzy.
My group seems to think that some people have a slight genetic predisposition to schizophrenia, but they havent linked all of the multiple genes together that could possibly interact and account for their theory of schizophrenia's polygenic origins.
Regarding drug use:
Not to rain on anyone's parade, but tinkering with something you dont really understand has never made much sense to me. Sure, some people have probably smoked pot forever and a day with no outward neurological deficits, but I wouldnt use that as my sole scientific justification for playing with my neurochemistry. Maybe I'm just a wuss, but i'd rather play it safe.
For the dude with the buddy and the schizophrenic episode:
He may or may not have "schizophrenia" per se. I'm no physician and cant speak to diagnoses or how long tranquilizers stay in your bloodstream, but I do know that your brain makes some pretty decent(possibly long-lasting) changes to itself when you start messing around with drugs. For all you know, your buddy might still be suffering from the tranquilizers.
In psychiatry, I've found that psychiatrists are always modifying their diagnoses as they spend more and more time with the patient.
Hopefully, your buddy will clear up in the coming months and his delusions and/or hallucinations will go into remission.
If not, then the outlook could be pretty grim with psychiatrists playing with his neurochemical balance for the rest of his life.
If you guys wanna read more about my group's attempt to link neuroimaging genomics and schizophrenia, then PM me and I will send you articles in PDF format. I get them here at the NIMH for free.
In the meantime, you can start by reading this page:
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