Many people use drugs as self medication. Same with the correlation of weed use and schizophrenia: reefer madness people say that the drug causes the illness, but weed is used by schizophrene people to tame the inner voices.
Weed exacerbates latent schizophrenia, and can make it worse, so do stimulants like Adderall
I've seen the opposite. I convinced a cute crazy and sometimes schizo young women to stop with the weed. A year later she couldn't keep her voices under control and went into a clinic, now she is destroyed by pharma.
Until now I've seen only studies about correlation. Many try to explain why one causes another, but nobody has found the mechanisms - most likely because they search for a causation that is not there. Maybe they should try to explain how being stoned can help making inner voices less urgent and demanding.
There are many different levels of schizophrenia. Most shrinks believe that smoking dope exacerbates it, according to what I have read, and dealt with first-hand over 54 years of knowing potheads.
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